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Jianwei Qiu (Jefferson Lab)10/13/26, 10:00 AM(1st week, Oct. 12-16) High-energy QCD
Transverse momentum department parton distributions (or simply, TMDs) and generalized parton distributions (GPDs) are fundamental quantum correlation functions of quarks and gluons (collectively referred to as partons) of nucleons and nuclei. They encode rich information that can unravel many aspects of the confined quark and gluon structure of nucleons in momentum and coordinate space,...
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Nobuo Sato (Thomas Jefferson National Accelerator Facility)10/13/26, 11:30 AM
Extracting the quark and gluon structure of hadrons from high-energy scattering data is a challenging inverse problem that requires flexible representations, efficient QCD calculations, and reliable uncertainty quantification. I will discuss recent progress toward a computational framework that connects measured events directly to the underlying partonic correlation functions. A central...
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10/13/26, 2:00 PM
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10/13/26, 3:30 PM
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Shohini Bhattacharya (University of Connecticut)10/14/26, 10:00 AM
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Cristian Pisano (University and INFN Cagliari)10/14/26, 11:30 AM(1st week, Oct. 12-16) High-energy QCD
In this talk I will discuss azimuthal modulations in lepton and heavy-quark pair production in ultraperipheral collisions (UPCs) of highly charged ions. A full description of the cross section in terms of Generalized Transverse Momentum Dependent parton distributions (GTMDs) for photons is given including a consideration of the Fourier transform to impact parameter space. In particular, this...
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10/14/26, 2:00 PM
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10/14/26, 3:30 PM
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Renaud Boussarie (CPHT, CNRS, Ecole polytechnique, IP Paris)10/15/26, 10:00 AM
The Balitsky-Kovchegov evolution equation, which governs QCD processes at high energy and can account for gluonic saturation effects in this limit, suffers from the presence of large collinear logarithms that make the perturbative expansion unstable. We develop a systematic framework to deal with such logarithms in terms of a scheme transformation within the standard high energy Operator...
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10/15/26, 11:30 AM
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Parada Hutauruk (SKCM2, Hiroshima University)10/15/26, 2:00 PM
In this talk, I will present the skewness dependence of the pion and kaon generalized parton distributions at different momentum transfers within the covariant Nambu-Jona-Lasinio model, employing the Schwinger proper-time regularization scheme to regulate ultraviolet divergences and implement an effective description of quark confinement. Our prediction results for the pion and kaon GPDs and...
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Tomoya Uji (The University of Tokyo)10/15/26, 2:30 PM(1st week, Oct. 12-16) High-energy QCD
Generalized transverse-momentum-dependent distributions (GTMDs) provide a phase-space description of partons and a natural framework for studying orbital angular momentum in the nucleon. In particular, the canonical quark orbital angular momentum (OAM) density is encoded in a transverse-momentum moment of the GTMD $F_{14}$. Beyond tree level, however, this moment is ultraviolet divergent, and...
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Shujun Zhao (Sophia University)10/15/26, 3:00 PM(1st week, Oct. 12-16) High-energy QCD
The Color Glass Condensate (CGC) is the effective theory for dense gluonic matter in the small-x regime of QCD, with forward-rapidity particle production in p+A collisions offering a sensitive testing ground. In this presentation, we introduce MC-CGC v3.0, a CGC-based Monte Carlo model upgraded to handle heavy-ion systems. This numerical approach extends previous analytic studies by...
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和廣 田中 (順天堂大学)10/15/26, 4:00 PM(1st week, Oct. 12-16) High-energy QCD
Gravitational form factors are related to a particular moment of the GPDs, and are relevant to EIC physics. Gravitational form factors are defined as the hadron matrix elements of the energy-momentum tensor (EMT). In QCD, the gauge-invariant part of the EMT is expressed as a sum of the several composite operators built from quark and gluon fields. Although the total EMT is finite and is not...
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茂義 青山 (KEK)10/15/26, 4:30 PM(1st week, Oct. 12-16) High-energy QCD
A framework is presented in which the baryon decouplets treated as a resonance in QCD sum rules and its decay width is determined self-consistently. The δ-pole approximation of the two-point correlation function is analytically continued to a complex-
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conjugate pair of poles characterized by a mass, a width, and a complex residue, an expression
that reduces exactly to the δ pole as the width... -
10/15/26, 6:00 PM
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Kyle Lee (Argonne)10/16/26, 10:00 AM
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Asmita Mukherjee (IIT Bombay)10/16/26, 11:30 AM(1st week, Oct. 12-16) High-energy QCD
I would present recent developments in theoretical calculations of Sivers asymmetry in almost back-to -back photo and electroproduction of J/psi and jet/photon production in the kinematics of EIC. J/psi production is treated in NRQCD. I'll show that this provides an excellent tool to probe the gluon Sivers function. I'll discuss the effect of TMD evolution and scheme dependence on the cross...
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10/16/26, 2:00 PM
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10/16/26, 3:30 PM
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Di-Lun Yang (Academia Sinica)10/19/26, 10:00 AM
Recent measurements of the global spin polarization of $\Lambda$ hyperons further indicate the presence of strong vorticity of the rotating QGP and manifest the relativistic Barnett effect at the subatomic scale. Nevertheless, the related spin alignment phenomena of vector mesons and local spin polarization, especially in proton-nucleus collisions, cannot be simply explained by the vorticity...
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Thomas Schaefer (North Carolina State University)10/19/26, 11:30 AM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We describe recent results obtained from numerical simulations
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of stochastic fluid dynamics near a QCD critical point. We
discuss results for the dynamic critical exponent, the
critical behavior of transport coefficients, and the relaxation
rate of equal-time correlation functions. We also discuss
some exploratory studies of stochastic relativistic fluid
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10/19/26, 2:00 PM
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10/19/26, 3:30 PM
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Volodymyr Vovchenko (University of Houston)10/20/26, 10:00 AM
Lattice QCD based extrapolations and functional QCD methods point to a candidate critical region near T ≈ 100–120 MeV and μ_B ≈ 600–650 MeV, motivating the search for its imprint on fluctuations in heavy-ion collisions. I will first briefly review these predictions, including the latest extensions to the strangeness-neutral conditions of heavy-ion collisions. I will then discuss how to connect...
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Ashish Pandav (LBL, Berkeley)10/20/26, 11:30 AM
Event-by-event fluctuations, such as those of charged-particle multiplicities, mean transverse momentum and particle ratios, have been identified as sensitive observables for the study of QCD phase structure, giving access to the thermodynamics of the medium created in heavy-ion collisions and to the possible existence of a critical point. I will review the current experimental picture from...
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10/20/26, 2:00 PM
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10/20/26, 3:30 PM
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Rainer Fries (Texas A&M University)10/21/26, 10:00 AM
We discuss the merits of using event generators in heavy ion physics and related systems, and give an overview of the family of JETSCAPE frameworks. We discuss recent updates and future plans regarding these event generators. We also present some recent results obtained with these frameworks, including a 3+1D Bayesian calibration of the soft sector using A+A and p+A data, a pilot study for...
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Gokce Basar (UNC Chapel Hill)10/21/26, 11:30 AM
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10/21/26, 2:00 PM
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10/21/26, 3:30 PM
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Cristina Manuel (Institute for Space Sciences (CSIC, IEEC))10/22/26, 10:00 AM
The advent of gravitational-wave astronomy is revolutionizing the study of neutron-star
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physics. It can provide valuable information about the equation of state of dense nuclear
matter, following the detection of mergers
of binary neutron-star systems.
There are strong indications that transport coefficients will be necessary for the study of
neutron-star mergers. In particular, bulk... -
77. Jets and medium-induced radiation during the early nonequilibrium stages in heavy-ion collisionsFlorian Lindenbauer (Massachusetts Institute of Technology)10/22/26, 11:30 AM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
One of the central open questions in heavy-ion collisions is how the initially far-from-equilibrium plasma of deconfined quarks and gluons evolves toward local thermal equilibrium, a process known as hydrodynamization. Despite its importance, direct experimental signatures of this early pre-equilibrium stage remain elusive. Hard probes, such as jets, produced at very early times, offer a...
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Akihiko Monnai (Osaka Institute of Technology)10/22/26, 2:00 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We present a novel hydrodynamic model of nuclear collisions in which baryon number, electric charge, and strangeness diffuse as coupled currents governed by the conductivity matrix [1], using a lattice-based four-dimensional QCD equation of state. Baryon diffusion transports net baryons toward midrapidity with growing strength at lower beam energies, while net strangeness develops a wave-like...
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Yu Zhang (Bielefeld University)10/22/26, 2:30 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We investigate the phase transition of QCD with three degenerate quark flavors at zero baryon chemical potential. Using Mobius domain-wall fermions as the lattice fermion formulation, we ensure excellent chiral symmetry preservation. Our simulations are performed at three different temporal lattice extents, $N_{t}=6,8,12$, with a fixed lattice spacing $a=0.1361(20)$ fm, corresponding to...
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Junxiong Nie (Osaka University)10/22/26, 3:00 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We report on our recent analysis of 2+1-flavor Lattice QCD at finite
temperatures. We employ the Möbius domain-wall fermion action in order to
keep the chiral symmetry well under control.We examine various symmetries using the two-point meson correlators
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near the critical temperature of the chiral phase transition. -
Akito Shigeyoshi (Sophia University)10/22/26, 3:15 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
In extreme environments characterized by very high temperature and density, such as those realized in the early universe and the interior of neutron stars, a state of matter consisting of quarks and gluons, known as the quark-gluon plasma (QGP), is expected to emerge. QGP has been produced in high-energy heavy-ion collisions, enabling extensive studies of its properties. In contrast, whether...
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Pietro Rescigno (RIKEN RCCS)10/22/26, 4:00 PM
Novel algorithmic developments have made it possible to perform efficient simulations of Lattice QCD at temperatures spanning up to the Electroweak scale. In this talk, I will present recent results on screening masses in several mesonic channels, for both static and non-static Matsubara sectors, obtained at 12 temperature values from 1 GeV up to 165 GeV. For each temperature, 3 or 4 lattice...
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Ms Rin Takada (The University of Tokyo)10/22/26, 4:30 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We point out a new phase structure of imaginarily rotating hot QCD: at zero quark chemical potential it has a phase in which charge conjugation $C$ is spontaneously broken and rotation alone induces an imaginary quark number density. At imaginary angular velocity $2\pi$ the existence of this phase is exact: the theory at $2\pi$ is nonrotating QCD at the Roberge-Weiss point, where $C$ is known...
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Sho Yoshida (the University of Tokyo)10/22/26, 4:45 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
QCD matter exhibits a variety of nontrivial static and dynamical phenomena under external fields. While electromagnetic fields are well-known examples, recent studies have suggested that curved spacetime can also act as an external gravitational background for quantum matter and significantly affect its phase structure.
Motivated by these developments, we address a rather fictitious but...
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10/22/26, 6:00 PM
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Prof. Tamas G. Kovacs (Eötvös Loránd University, Budapest)10/23/26, 11:30 AM
The spectrum of the Dirac operator is not a directly observable object,
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however, several bulk thermodynamic quantities can be expressed in terms of
the Dirac spectral density. The most prominent example is the Banks-Casher
relation that connects the order parameter of chiral symmetry breaking to the
Dirac spectrum. Recently, above the crossover temperature, a rich and highly
nontrivial... -
10/23/26, 2:00 PM
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10/23/26, 3:30 PM
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10/26/26, 9:00 AM
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Charlotte Van Hulse (Vrije Universiteit Brussel (VUB))10/26/26, 9:10 AM
The study of hard exclusive processes in lepton-hadron and hadron-hadron collisions provides, through its sensitivity to generalised parton distributions (GPDs), information on multi-dimensional quark and gluon distributions and on the distribution of internal forces inside nucleons and nuclei. After an introduction to these concepts, existing and planned measurements will be presented and...
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Dr Parada Hutauruk (SKCM2, Hiroshima University)10/26/26, 9:55 AM(3rd week, Oct. 26-30) Symposium
In this talk, I will present the recent results for the gravitational form factors of the scalar Hopfion glueball within the Skyrme–Faddeev model, which is characterized by the nontrivial Hopf topological invariant. The extraction of the form factors $A(t)$ and $D(t)$ from the matrix element of the energy–momentum tensor and the prediction results for $A(t)$ and $D(t)$ will be presented and discussed.
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Farid Salazar (Temple University)10/26/26, 10:45 AM(3rd week, Oct. 26-30) Symposium
A central goal of the future Electron-Ion Collider and of upcoming upgrades at the Large Hadron Collider is the search for a new regime of nuclear matter known as the Color Glass Condensate (CGC). In this extreme state, matter is dominated by an exceptionally dense population of gluons, the particles responsible for binding quarks inside protons and nuclei. Over the past two decades,...
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Nicholas J. Benoit (Academia Sinica)10/26/26, 11:30 AM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We have developed a new numerical model to tackle an important problem of heavy-ion physics: the missing link between the pre-equilibrium Glasma and the resulting quark gluon plasma (QGP) stage. Our model simulates the nonperturbative production and real-time dynamics of the quarks from the Glasma. In this presentation, we will introduce our model and report on the role of particle production...
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Felix Ringer (Stony Brook University)10/26/26, 2:00 PM
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Manato Wada (Niigata University)10/26/26, 2:45 PM(3rd week, Oct. 26-30) Symposium
Chiral effective field theory (chiral EFT) provides a systematic framework for understanding the long-range forces between hadrons based on QCD. Recent advances in femtoscopic measurements [1] have expanded experimental access to hadron–hadron interactions beyond the nucleon–nucleon system, while lattice QCD has provided quantitative results for heavy-quarkonium–nucleon interactions at a...
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坂本 コナン (基礎物理学研究所)10/26/26, 3:05 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Much of the physics in the cold-dense region in the QCD phase diagrams are characterised by the formation of Cooper pairs on the Fermi surface. In two-flavour symmetric quark matter, a phase transition is expected to occur into the two-flavour colour superconducting (2SC) phase. A key feature of this phase is that certain quarks remain ungapped due to repulsive colour-symmetric interactions....
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Bruno Scheihing (Kavli Institute for Theoretical Physics, University of California Santa Barbara)10/26/26, 3:55 PM(3rd week, Oct. 26-30) Symposium
Heavy quarks propagating through quark-gluon plasma provide a unique, experimentally accessible, opportunity to study the real-time dynamics of QCD in its strongly coupled regime. In the infinite heavy quark mass limit, the momentum change probability of a heavy quark in a thermal environment is characterized by the thermal expectation value of a Wilson loop featuring two long antiparallel...
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Prof. Sinya Aoki (Fundamental Quantum Science Program, RIKEN)10/26/26, 4:25 PM(3rd week, Oct. 26-30) Symposium
I present recent developments in the HAL QCD method on hadron interactions in lattice QCD. Topics cover optimized two-baryon operators, Hermiticity and non-Hermiticity in HAL QCD potentials, dibaryons, exotic hadrons such as $T_{cc}$ and $T_{bb}$, and experimental confirmation of hadron interaction extracted in the HAL QCD method by Femtoscopy.
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Dr Asanosuke Jinno (KEK)10/26/26, 4:55 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
The properties of hyperon in nuclear matter provides an important link toward extending our understandings of neutron stars and QCD matter. We present our investigations of hyperon single-particle potentials in nuclear matter. Our recent efforts to construct a microscopic effective theory for QCD at finite density will also be presented.
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87. What can we learn about the cold matter equation of state of QCD while evading the sign problem?Thomas Cohen (University of Maryland)10/27/26, 9:00 AM(3rd week, Oct. 26-30) Symposium
The equation of state of cold matter in QCD is a central issue in particle physics, nuclear physics as well as the astrophysics of neutron stars. Unfortunately, direct lattice calculation of the equation of state as a function of density using lattice methods are not viable due to an exponentially bad sign problem when a chemical potential is included. However, this need not mean that...
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Pavel Slepov (Steklov Mathematical Institute of RAS)10/27/26, 9:45 AM(3rd week, Oct. 26-30) Symposium
We study the phase structure of hot, dense QCD matter within five-dimensional anisotropic holographic models of Einstein–dilaton–Maxwell type, which support both primary and magnetic-field-induced anisotropies. The background equations are solved in fully analytic form for the light- and heavy-quark cases, allowing us to locate the first-order and crossover phase transitions and to construct...
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Michele Pepe (INFN - sezione Milano Bicocca)10/27/26, 10:45 AM
Understanding QCD at high temperatures is essential for describing strongly interacting matter and the evolution of the early Universe. I will present a non-perturbative determination of the Equation of State of QCD with three massless quark flavours, covering temperatures from 3 GeV up to the electroweak scale and smoothly connecting to the low-temperature regime. The comparison with...
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Yusuke Shimada (YITP, Kyoto University)10/27/26, 11:30 AM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
In this talk, I will report our recent achievements on the thermodynamics of finite-temperature QCD matter under acceleration.
QCD Phase Transition under Acceleration
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Various phases of QCD matter have been studied with external parameters such as temperature, density, magnetic field, and rotation. Recently, acceleration has also attracted attention as an additional axis of the QCD... -
Dam Thanh Son (University of Chicago)10/27/26, 2:00 PM
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Ryo Miura (Niigata university)10/27/26, 2:45 PM(3rd week, Oct. 26-30) Symposium
It is well known that superfluid phonons, which are Nambu-Goldstone modes resulting from the spontaneous breaking of $U(1)$ symmetry, can be described in terms of a dual two-form gauge field. In this two-form language, quantized vortex lines are formulated as degrees of freedom carrying dual charges.
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In this work, we theoretically analyze the dynamics of a quantized vortex ring propagating in... -
Jun Mitsuhashi (Niigata University)10/27/26, 3:05 PM(3rd week, Oct. 26-30) Symposium
Self-bound quantum droplets appear in various physical contexts, ranging from cold atomic gases to QCD matter such as those found in neutron stars. In this presentation, we discuss a universal effective field theory that describes the low-energy dynamics of small-amplitude surface oscillations in such diverse quantum droplets, independent of their microscopic binding mechanisms [1].
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Focusing... -
Prof. Teiji Kunihiro (YITP, Kyoto U.)10/27/26, 3:55 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
We give a systematic account of the soft mode dynamics of QCD critical point(QCD-CP) and the two-flavor color-superconductivity(2SC-CP).
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The QCD-CP of a second-order naturecomes to exist when an explicit chiral symmetry breaking is present at finite baryon density where the charge-conjugation symmetry is lost. Thus, the order parameter of it is a linear combination of the baryon density and... -
Noriyuki Sogabe (University of Osaka)10/27/26, 4:25 PM(3rd week, Oct. 26-30) Symposium
We show that Landau quantization in strongly magnetized two-flavor color-superconducting quark matter suppresses the conventional Fermi-surface contribution to the transverse Meissner response, allowing it to be controlled by the quantum geometry of the quasiparticle states. As a result, the transverse Meissner mass scales with the pairing gap, in contrast to the conventional chemical...
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Michał Marczenko (Hiroshima University)10/27/26, 4:55 PM
In this talk, I present our recent results on the hadron spectra in QCD. We show that hadrons in QCD follow a spectrum determined by string dynamics characterized by a universal Hagedorn temperature linked to the string tension. This behavior was recently established for light hadrons and glueballs [1, 2]. We also demonstrate that the same dynamics describes the heavy-flavor sector [3]. The...
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Jorge Noronha (University of Illinois Urbana-Champaign)10/28/26, 9:00 AM
Heavy-ion collision experiments have provided compelling evidence that quarks and gluons can behave as a strongly interacting, low-viscosity relativistic liquid over distance scales not much larger than the size of a proton. Meanwhile, gravitational-wave observations of binary neutron star mergers have made understanding the dynamics of extremely dense matter in strong gravitational fields...
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Kazuya Mameda (Tokyo University of Science)10/28/26, 9:45 AM(3rd week, Oct. 26-30) Symposium
Quantum metric, which defines a distance on Hilbert space, has become an important notion in describing many-body physics. While quantum-metric effects in electric currents have been actively discussed in condensed matter physics, the fundamental aspects of kinetic theory incorporating quantum metric remain largely unexplored. In this talk, I will show general features of such a kinetic...
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Aleksas Mazeliauskas (Institute for Theoretical Phyiscs, Heidelberg University)10/28/26, 10:45 AM
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Kristina Rannu (Peoples' Friendship University of Russia (PFUR))10/28/26, 11:30 AM(3rd week, Oct. 26-30) Symposium
In recent years the phase diagram of the QGP, produced in HIC, was investigated for light quarks (u, d, s) and heavy quarks (c, b) separately, and different types of the phase transition pictures in these pure cases were brought out. The realistic model construction requires to take into account, that light and heavy quarks should be present in the HIC products together. This problem raises a...
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Owe Philipsen (Goethe University Frankfurt, Germany)10/28/26, 2:00 PM
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Tatsuya Wada (Kyoto University/YITP)10/28/26, 2:45 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
The QCD phase structure at finite temperature and density remains largely unexplored because of the sign problem. At purely imaginary chemical potential, however, lattice QCD simulations can be performed without this difficulty. In particular, at $\mu_q/T=i\pi/3$, the Roberge--Weiss (RW) transition occurs as a consequence of the $Z_3$ symmetry. The nature of the RW endpoint depends on the...
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Sejal Singh (Sophia University, BITS Pilani)10/28/26, 3:05 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
In non-central heavy-ion collisions, the colliding nuclei carry a large amount of angular momentum, which can be transferred to the hot and dense partonic medium known as quark-gluon plasma (QGP) created in the interaction region. This gives rise to a vortical structure of the medium which is subsequently reflected in the polarization of final-state hadrons. Several theoretical frameworks have...
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Gyozo Kovacs (University of Wrocław & Wigner RCP)10/28/26, 3:55 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
Finite-size effects modify the QCD phase diagram not only at real but also at complex values of the thermodynamic parameters. In this talk, we discuss these effects in an effective model framework that can describe finite-size scaling and the Lee-Yang zeros in finite volumes, while exhibiting a critical point in the thermodynamic limit. We compare several methods for locating the criticality...
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Mx rob pisarski (brookhaven national laboratory)10/28/26, 4:25 PM(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
The order of the chiral phase transition in the plane of temperature, $T$, and chemical potential, $\mu$, continues to puzzle. I conjecture that for massless quarks, the chiral phase transition at $(T_\chi,\mu_\chi)$ is syncretic: terms which break the axial $U(1)_A$ symmetry are fractional powers of 't Hooft determinants in the broken phase (for $N_c$ colors, an integer times $1/N_c$) but...
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Ivan Horvath (University of Kentucky)10/28/26, 4:55 PM(3rd week, Oct. 26-30) Symposium
I will discuss key aspects of the infrared (IR) phase in QCD and vectorlike gauge theories in general. The phenomenon of IR decoupling, and its uses, will be given a particular attention.
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Luciano Rezzolla (Institute for Theoretical Physics, Frankfurt, Germany)10/29/26, 9:00 AM
I will argue that if black holes represent one the most fascinating implications of Einstein's theory of gravity, neutron stars in binary system are its richest laboratory, where gravity blends with astrophysics and particle physics. I will discuss the rapid recent progress made in modelling these systems and show how the gravitational signal can provide tight constraints on the equation of...
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Mahboubeh Shahrbaf Motlagh (University of Wroclaw)10/29/26, 9:45 AM(3rd week, Oct. 26-30) Symposium
Strangeness provides a unique bridge between laboratory hypernuclear physics and the composition of neutron star (NS) interiors. In this talk, I will present a microscopic study of dense matter containing Λ hyperons within the lowest-order constrained variational (LOCV) framework, using realistic spin- and parity-dependent ΛN and ΛΛ potentials constrained by available hypernuclear data....
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Oleg Komoltsev (Goethe-Universität Frankfurt am Main)10/29/26, 10:45 AM(3rd week, Oct. 26-30) Symposium
As our understanding of cold, extremely dense matter grows, a multidisciplinary approach that combines recent progress in multimessenger neutron-star observations with theoretical knowledge of the equation of state (EoS) becomes increasingly essential. In this talk, I present a new physically motivated framework for encoding prior knowledge about dense matter arising from chiral effective...
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Giuseppe Pagliara (University of Ferrara (Italy))10/29/26, 11:30 AM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Hadronic stars and strange quark stars could coexist within the so-called two-families scenario. In this respect, hadronic matter and strange quark matter correspond to two distinct equilibrium phases described by two different equations of state. I will present the first detailed Bayesian analysis that makes use of astrophysical and laboratory data in order to constrain the equations of state...
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Aleksi Kurkela (University of Stavanger)10/29/26, 2:00 PM(3rd week, Oct. 26-30) Symposium
Neutron stars are the densest astrophysical objects in our universe, reaching densities
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as high as those realized in ultrarelativistic heavy-ion collisions at the LHC. In these collisions
ordinary nuclear matter melts into a new phase of elementary particle matter, quark matter.
This naturally raises the question: does quark matter also exist inside neutron stars? The rapid... -
Davood Rafiei Karkevandi (University of Wroclaw, Institute of Theoretical Physics)10/29/26, 2:45 PM(3rd week, Oct. 26-30) Symposium
Neutron stars provide a unique astrophysical laboratory for probing dark matter under extreme density and strong gravity. Motivated by dark-sector interpretations of the neutron lifetime anomaly, we investigate neutron-to-dark-matter conversion in dense neutron-star matter and its impact on the equation of state and stellar observables.
We model baryonic matter within a non-linear...
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Masayuki Kanazawa (Nagoya University)10/29/26, 3:05 PM(3rd week, Oct. 26-30) Symposium
The baryon mass originates from spontaneous chiral symmetry breaking and a chiral invariant mass. The chiral invariant mass of hyperons has not been sufficiently considered. In this study, we investigate the dependence of the density at which hyperons appear on their chiral invariant masses in neutron star matter. We employ SU(2)_L x SU(2)_R chiral symmetry and introduce the chiral invariant...
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Dr Bao-Jun Cai (Fudan University)10/29/26, 3:55 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Understanding the equation of state (EOS) of dense matter in neutron star cores remains one of the central challenges in nuclear physics and astrophysics. Recent multimessenger observations, including gravitational-wave signals from binary neutron star mergers together with X-ray and radio pulsar measurements, have opened unprecedented opportunities to probe matter at supranuclear densities....
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10/29/26, 6:00 PM
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Aleksey Cherman (University of Minnesota)10/30/26, 9:00 AM
QCD with massless quarks has a temperature-driven chiral phase transition. Contrary to historical analytic and numerical expectations, recent lattice simulations find no evidence for a first-order chiral transition for any number of massless flavors N_f studied. It is therefore natural to ask whether the transition might be second order for all N_f. I will explain the constraints on this...
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Kei-Ichi Kondo (Chiba University)10/30/26, 9:45 AM(3rd week, Oct. 26-30) Symposium
We present a formulation for understanding color confinement on the basis of quantum reference frames (QRFs) and relational observables. In the QRF approach to color confinement, colored quantities are not defined as isolated local fields, but rather as relational observables with respect to a color frame or a dressing field. By the Gauss law, local color charge is excluded from the physical...
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Jon-Ivar Skullerud (Maynooth University)10/30/26, 10:45 AM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
We present recent results from lattice simulations of dense 2-colour QCD with Wilson fermions, with particular emphasis on (1) thermodynamics, including the speed of sound; (2) the structure of ground state fields at high density; and (3) simulations with an improved fermion action.
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Ivan Arraut (Kyungdong University)10/30/26, 11:30 AM
It has been demonstrated that the Quantum Yang Baxter Equations (QYBE) govern the dynamics of the Nambu-Goldstone bosons due to the natural constraints coming from the relations. In such a case, the problem of connecting dispersion relations with the number of Nambu-Goldstone bosons is solved naturally. The QYBE were also employed for finding constraints on the neutrino oscillation matrices,...
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Misha Stephanov (University of Illinois Chicago)10/30/26, 12:00 PM
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Yoshimasa Hidaka (YITP)10/30/26, 12:45 PM
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Sanjay Reddy (University of Washington)11/2/26, 10:00 AM
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Bastian Brandt (Bielefeld University)11/2/26, 11:30 AM
The QCD equation of state (EoS) at non-zero density is the major input for the phenomenological description of many interesting physics systems, such as neutron stars, neutron star merger and heavy-ion collisions. Unfortunately, simulations at large baryon density, or, equivalently, chemical potentials, suffer from the complex action problem, prohibiting the direct computation of the EoS...
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Koichi Hattori (Zhejiang University)11/2/26, 2:00 PM
The moat regime has attracted considerable attention as a possible precursor to inhomogeneous phases in the QCD phase diagram at finite chemical potential. We investigate effects of a magnetic field and chiral anomaly that induce mixing between the scalar and pseudoscalar channels. By computing the effective action, we determine dispersion relations of the eigenmodes. Minima at finite momentum...
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Sota Hanai (Academia Sinica)11/2/26, 3:30 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Understanding the response of relativistic plasmas is important for elucidating high-energy systems such as neutron stars, the early Universe, and heavy-ion collisions. In these systems, the chirality of fermions is known to induce non-trivial transport phenomena.
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Motivated by this, we study electromagnetic collective excitations in magnetized relativistic plasmas, taking the chiral charge... -
Akio Tomiya (TWCU)11/2/26, 4:00 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Dense QCD is an important subject in strong-interaction physics. Lattice studies of dense strongly interacting matter have developed along several complementary directions, including two-color QCD at baryon density, three-color QCD using imaginary chemical potential and expansion methods, and three-color QCD at finite isospin density. These studies provide important benchmarks for onset,...
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Nora Brambilla (TUM)11/2/26, 4:30 PM
We show how the Born--Oppenheimer effective field theory (BOEFT) provides
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a unified description of ordinary and exotic quarkonia grounded on the
non-relativistic expansions of QCD and supplemented with lattice QCD inputs. We show applications of the BOEFT to tetraquarks, pentaquarks, quarkonium hybrids and to assess threshold effects in the quarkonium spectrum. We present the insights... -
Tyler Gorda (The Ohio State University)11/4/26, 10:00 AM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
How bad is the sign problem in QCD? It turns out that in the perturbative regime, the sign problem enters at $O(\alpha_s^3)$ in the strong coupling $\alpha_s$ to leading order. In this talk, I explain why the sign problem only enters at such high order, and I present the full $O(\alpha_s^3)$ result for it for all $\mu$ and $T$. I also explain how this result can be combined with future lattice...
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Muneto Nitta (Keio University)11/4/26, 11:30 AM
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11/4/26, 2:00 PM
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11/4/26, 3:30 PM
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Ryan Abbott (Columbia University)11/5/26, 10:00 AM
The problem of reconstructing spectral densities from noisy
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Euclidean-time Monte-Carlo data provides a valuable test-bed for
investigating real-time and inclusive observables, and sign problems
more broadly. In this talk, I will discuss new methods for spectral
reconstructions that unify several approaches, including
analyticity-based approaches (Nevanlinna-Pick interpolation,... -
Dr Srimoyee Sen (Iowa State University)11/5/26, 11:30 AM
Weak-interaction-mediated chiral imbalance generation in idealized massless electrons during core-collapse supernovae was once proposed to be the source of strong magnetic fields found in neutron stars. The effect goes by the name of chiral plasma instability. However, it was found that a finite electron mass damps out this process, inactivating the instability and preventing magnetic field...
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JAMES LATTIMER (Stony Brook University)11/5/26, 2:00 PM
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Prof. Sophia Han (T.D. Lee Institute, Shanghai)11/5/26, 2:30 PM
The neutron star interior reaches ultra-high densities with its composition details unknown. Gravitational wave emissions from neutron stars are promising probes that can help reveal novel phases of dense matter. In this talk, I will discuss the distinct behaviors of the adiabatic and equilibrium sound speeds in various theoretical models of the equation of state (EoS) for neutron-star matter,...
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David Edwin Alvarez Castillo (Institute of Nuclear Physics PAS and FCFM UANL)11/5/26, 3:00 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
In this work we present hybrid stars with a superconducting quark matter core covered by a hyperonic nuclear matter. The deconfined phase is modelled within a chirally symmetric density functional approach and follows a first order phase transition via a Maxwell construction from a hyperonic DD2 equation of state. While the hadronic phase is fixed, the range of properties of the quark matter...
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Yuki Fujimoto (Niigata University)11/5/26, 4:00 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Color superconductivity arises from the Cooper logarithm near the quark Fermi surface. Conventional gap equations organized by total angular momentum can obscure distinct spin-orbital pairing channels; for example, the $J=0$ sector contains both ${}^{1}S_0$ and ${}^{3}P_0$. We revisit this problem using one-gluon-exchange helicity amplitudes and a renormalization-group theory near the Fermi...
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Loic Fernandez (Central China Normal University)11/5/26, 4:30 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
We will discuss the recent developments in renormalization group improvements of the cold and dense QCD pressure (Phys. Rev. D 111, 034020 and Phys. Rev. Lett. 129, 212001) at next-to-next-to leading order (NNLO) through the renormalization group optimized perturbation theory (RGOPT) and at all-order resummation of the soft modes. RGOPT applied for the very first time at NNLO displayed a...
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Chiho Nonaka (Hiroshima University / Nagoya University)11/5/26, 5:00 PM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
The equation of state (EOS) of high-density nuclear matter is one of the central questions in nuclear physics. Collisions of deformed nuclei provide a unique opportunity to probe the EOS by controlling the collision geometry through the orientation of the colliding nuclei. In particular, body–body collisions of strongly prolate nuclei such as U can generate a large spatial eccentricity even in...
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11/5/26, 6:00 PM
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Saga Sappi (ICE-CSIC & IEEC)11/6/26, 10:00 AM(4th week, Nov. 2-6) Dense QCD Matter and Compact Stars
Over the last decade or so, blazing-fast progress has been made in perturbative computations of dense QCD matter. With the sign problem preventing the use of lattice methods, pQCD is a rare first-principles methods for gaining insight into the properties of quark matter and, consequently, constraining the properties of the neutron star equation of state.
I will outline the current progress...
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Bao-An Li (East Texas A&M University)11/6/26, 11:30 AM
Understanding the equation of state (EOS) of dense, neutron-rich matter is a central goal of neutron star physics and is essential for identifying possible exotic phases and phase transitions in compact stars. To more precisely constrain the EOS, future high-precision X-ray and gravitational wave observatories are proposed to measure the radii of neutron stars (NSs) with an accuracy better...
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11/6/26, 2:00 PM
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11/6/26, 3:30 PM
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Yui Hayashi (UTokyo)11/9/26, 10:00 AM
The mechanism of confinement is conventionally understood through the proliferation of monopoles or center vortices. We propose gauge-invariant criteria for center-vortex and monopole condensations using the $\mathbb{Z}_N$ 1-form symmetry twisted partition functions. Based on this formulation, we show that center-vortex condensation requires monopole condensation in gapped systems with...
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Emily Nardoni (Vassar College)11/9/26, 11:30 AM
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11/9/26, 2:00 PM
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11/9/26, 3:30 PM
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Prof. Yannick Meurice (University of Iowa)11/10/26, 10:00 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
We discuss recent applications of the Tensor Renormalization Group (TRG) for lattice field theory: 1) relation between zeros of the partition function and spectral gaps, 2) quantum engineering of plaquette interactions, and 3) phase shifts and resonances in real-time calculations.
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Shinichiro Akiyama (University of Tsukuba)11/10/26, 11:30 AM
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11/10/26, 2:00 PM
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11/10/26, 3:30 PM
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Mendel Nguyen (Durham University)11/11/26, 10:00 AM
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Jing-Yuan Chen (Institute for Advanced Study Tsinghua University)11/11/26, 11:30 AM
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11/11/26, 2:00 PM
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11/11/26, 3:30 PM
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Etsuko Itou (YITP, Kyoto University)11/12/26, 9:20 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
We investigate the entanglement structure of the 2+1-dimensional Z_2 lattice gauge theory using tensor-network methods. We construct gauge-invariant ground state based on the gauged Gaussian PEPS (GGPEPS) ansatz proposed by Zohar et al., which automatically satisfies Gauss’ law. This ansatz enables us to study the theory over a wide range of coupling constants while keeping gauge invariance...
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Kohei Fujikura (YITP)11/12/26, 9:45 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
We study cold dense single-flavor $SU(N_c)$ gauge theory in (1+1) dimensions in the thermodynamic limit using a gauge-invariant variational uniform matrix product state ansatz. This formulation provides a sign-problem-free, first-principles approach to dense QCD. We show that, at finite baryon density with $N_c=2$, the infrared behavior is consistent with a Tomonaga--Luttinger liquid: the...
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Ho Hsiao (Center for Computational Sciences, University of Tsukuba)11/12/26, 10:10 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Gauge fixing is an essential step in lattice QCD calculations, particularly for the study of gauge-dependent observables. Traditional iterative gauge-fixing algorithms are computationally expensive and can suffer from critical slowing down near fixed points, leading to increasing computational costs on large lattices. We present a machine-learning framework for lattice gauge fixing, in which...
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Soma Onoda (Kyushu University)11/12/26, 10:35 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
A central challenge in formulating chiral gauge theories on the lattice is to realize the anomaly-cancellation mechanism at finite lattice spacing. In this talk, I present a bosonization-based lattice formulation of two-dimensional non-Abelian chiral gauge theories.
In the continuum description based on non-Abelian bosonization, the gauge anomaly of chiral fermions is encoded through...
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Tsubasa Sugeno (Tohoku University)11/12/26, 11:30 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Dualities between two-dimensional supersymmetric gauge theories can be obtained by compactifying dual four-dimensional theories on $S^2$. In this talk, we discuss how the statements of these dualities can be refined by taking into account the global structure of the gauge groups. In particular, we focus on the Intriligator–Seiberg duality between supersymmetric QCDs with SO and Spin gauge groups.
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Nagare Katayama (YITP)11/12/26, 11:55 AM
Understanding the microscopic origin of confinement and the other gapped phases in four-dimensional Yang–Mills theory remains a central challenge. The Wilson–’t Hooft classification constrains these phases through the behavior of electric and magnetic line operators. The Cardy–Rabinovici model provides an Abelian setting in which to study confinement, oblique confinement, and duality. In our...
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Shota Saito (Kavli IPMU)11/12/26, 1:50 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
We study SUSY gauge theories exhibiting true confinement after introducing anomaly mediated SUSY breaking (AMSB), focusing on the resulting vacuum structure and symmetry breaking as the theories become non-SUSY. The UV insensitivity of AMSB allows us to use known low energy effective theories even in strongly coupled regimes. We analyze several examples and find that vacuum branches with an...
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Fathiyya Izzatun Az Zahra (YITP)11/12/26, 2:15 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
The study of two- and three-particle states interaction is important for hadron physics. Lattice QCD provides a non-perturbative framework for investigating strongly interacting quantum field theories and can be used to study the two- and three-particle states numerically, where Monte Carlo (MC) method is the standard approach employed for the simulations. Despite of its success, MC method has...
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Sho Araki (Osaka university)11/12/26, 2:40 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Symmetric mass generation (SMG) is a mechanism for opening a gap without spontaneous symmetry breaking, first demonstrated by Fidkowski and Kitaev in a one-dimensional Majorana-chain model. We formulate the model as a Euclidean path integral on a two-dimensional lattice, with and without domain walls. Our numerical results show that four-fermion interactions can gap out the Majorana mode...
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Hiromasa Watanabe (Keio University)11/12/26, 3:05 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Gradient flow provides a practical framework for defining and investigating gauge topology on the lattice. At finite lattice spacing, however, flow at large flow time may cause topological objects to shrink and eventually disappear, altering the identification of topological sectors. We present a systematic study of long-time gradient flow in $SU(2)$ and $SU(3)$ Yang–Mills theories, comparing...
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Mr Genki Yoshimura (The University of Osaka, Graduate School of Physics)11/12/26, 4:00 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Axion electrodynamics in vacuum exhibits rich generalized global symmetries, including higher-form symmetries, higher-group structures, and non-invertible symmetries. However, a universal description of real-time dynamics of axion electrodynamics has not been established, and generalized symmetries in this nonequilibrium regime remain poorly understood.
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We construct a nonequilibrium effective... -
Alvaro Pastor Gutierrez (RIKEN iTHEMS)11/12/26, 4:25 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Dynamical symmetry breaking plays a crucial role in mass and scale
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generation. In QCD-like theories, its dependence on the number of
fermion flavours determines the phase structure and the transition to
the conformal regime. In this work, we employ the functional
renormalisation group and the generalised flow equation to compute
non-perturbative corrections, including momentum... -
Shoto Aoki (RIKEN iTHEMS)11/12/26, 4:50 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
We study the duality of lattice Maxwell theory in the modified Villain formulation, employing an ultra-local action with a theta term. Although this action is known to become non ultra-local through the Poisson resummation formula, we show that this non ultra-locality can be removed by incorporating a non-local transformation procedure into the definition of the S-transformation. As a result,...
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Akihiro Shibata (Computing Reserch Center, KEK)11/12/26, 5:15 PM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
The dual superconductor picture is a promising mechanism for quark confinement, and magnetic monopoles play a dominant role in quark confinement. To understand the mechanism of quark confinement, we investigate the relationship among the violation of the non-Abelian Bianchi identity (VNABI), the emergence of magnetic monopoles, and quark confinement by using the gauge-covariant decomposition...
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11/12/26, 6:00 PM
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Jinfeng Liao (Indiana University Bloomington)11/13/26, 10:00 AM(5th week, Nov. 9-13) Theoretical Developments in QCD and related topics
Emergent topological objects are known to play a fundamental role in the QCD nonperturbative phenomena such as confinement and chiral symmetry breaking. Examples include the family of instantons (vacuum instantons, calorons at finite temperature, as well as instantons with nontrivial holonomy), the sphalerons, and the chromo-magnetic monopoles. This talk will focus on discussing possible...
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Xiaojun Yao (University of Washington)11/13/26, 11:30 AM
Quantum simulation of lattice gauge theory has attracted a lot of interest recently. A widely studied Hamiltonian setup for lattice gauge theory is the Kogut-Susskind Hamiltonian, which is constructed in temporal gauge. As a consequence of this gauge choice, Gauss's law has to be imposed. Despite of great progress in designing quantum algorithms for the Kogut-Susskind Hamiltonian, of which I...
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11/13/26, 2:00 PM
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11/13/26, 3:30 PM
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José Javier Hernández Hernández (Central China Normal University)(2nd week, Oct. 19-23) QCD Matter under Extreme Conditions
Magnetic fields explicitly break the non-singlet flavour symmetry of QCD, since the light quarks carry unequal electric charges. The conventional mesonic partner relations used to diagnose chiral and $U(1)_A$ restoration at vanishing field must therefore be reconsidered before they can be applied at $eB\neq0$. We show that the neutral channels retain this diagnostic role: the splitting between...
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