Exact lattice chiral symmetry in 2d gauge theory

開催日時

2024/01/23 11:00 – 12:00

開催場所

Online (Zoom)

講演者

Dr. Cherman Aleksey (School of Physics and Astronomy, University of Minnesota)

言語

English

詳細ページ

お問い合わせ

三浦 光太郎/kohmiura-AT-post.kek.jp


概要

Preserving the symmetries of massless fermions is a well-known challenge in lattice field theory. I’ll discuss symmetry-preserving lattice regularizations of 2d QED with one and two flavors of Dirac fermions, as well as the `3450′ chiral gauge theory. The construction leverages bosonization and recently-proposed modifications of Villain-type lattice actions. The internal global symmetries act just as locally on the lattice as they do in the continuum, the anomalies are reproduced at finite lattice spacing, and in each case we’ve found a sign-problem-free dual formulation.