Srimoyee Sen "[Hybrid RBRC Seminar] Weyl fermions on a finite lattice"

Thursday 6 Jun 2024, 12:30 → 13:30 US/Eastern

2-160 ( https://bnl.zoomgov.com/j/1619458475?pwd=Z1VDdXVXcWF1eUhsRDZObVJnME4rUT09)

Chiral gauge theories, like the standard model, have lacked a non-perturbative regulator since their inception despite numerous attempts at finding one. One of the challenges in using a lattice regulator for this purpose lies in our inability to isolate a single Weyl fermion. In recent work by Kaplan, it was shown that a single massless Weyl fermion can emerge as an edge state in a theory of a massive Dirac fermion on a disc. I discuss how this construction can be realized on the lattice and removes a significant obstacle for regulating chiral gauge theories.