Speaker
Prof.
Sven Bjarke Gudnason
(Henan University)
Description
In this talk, I will introduce dense baryonic matter in the Sakai-Sugimoto (SS) model, a popular variant of holographic QCD, using a homogeneous Ansatz for isospin symmetric matter and then for nonvanishing isospin chemical potential. I will also show that the isospin contribution to the energy, directly proportional to the symmetry energy, can be computed formally as a moment of inertia of the matter. Then I will show that it corresponds to the chemical potential via a gauge transformation. I will then discuss a technical subtlety of the Chern-Simons term in a model with discontinuous fields. Finally, I will argue for a new fit of the SS model that leads to phenomenologically acceptable neutron stars.
Author
Prof.
Sven Bjarke Gudnason
(Henan University)