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October 14, 2024 to November 15, 2024
YITP
Asia/Tokyo timezone

Lattice Weyl Fermion on a single spherical domain-wall 2

Nov 11, 2024, 12:00 PM
30m
Panasonic Auditorium, Yukawa Hall (YITP)

Panasonic Auditorium, Yukawa Hall

YITP

5th week (Formal developments and other frontiers in lattice QCD) Seminar (5th week)

Speaker

Naoto Kan (Osaka University)

Description

We discuss a single domain-wall system with a nontrivial curved background by considering a massive fermion on a 3D square lattice, where the domain-wall is a 2D sphere. In the presence of a topologically nontrivial U(1) link gauge field, we observe the emergence of a zero mode with opposite chirality localized at the center where the gauge field is singular. This results in the low-energy effective theory becoming vectorlike rather than chiral. We also discuss how to circumvent this obstacle in formulating lattice chiral gauge theory in the single domain-wall fermion system.

Primary authors

Naoto Kan (Osaka University) Shoto Aoki (U. Tokyo, Komaba) Hidenori Fukaya (Osaka University)

Presentation materials