PIRSA:15120034

A Nonperturbative Regulator for Chiral Gauge Theories and Fluffy Mirror Fermions

Grabowska, D. (2015). A Nonperturbative Regulator for Chiral Gauge Theories and Fluffy Mirror Fermions . Perimeter Institute. https://pirsa.org/15120034

Grabowska, Dorota. A Nonperturbative Regulator for Chiral Gauge Theories and Fluffy Mirror Fermions . Perimeter Institute, Dec. 14, 2015, https://pirsa.org/15120034 

          @misc{ pirsa_PIRSA:15120034,
            doi = {10.48660/15120034},
            url = {https://pirsa.org/15120034},
            author = {Grabowska, Dorota},
            keywords = {Cosmology},
            language = {en},
            title = {A Nonperturbative Regulator for Chiral Gauge Theories and Fluffy Mirror Fermions },
            publisher = {Perimeter Institute},
            year = {2015},
            month = {dec},
            note = {PIRSA:15120034 see, \url{https://pirsa.org}}
          }

Dorota Grabowska Lawrence Berkeley National Laboratory

DOI 10.48660/15120034
Collection
Talk Type Scientific Series
Subject

Abstract

I discuss a new proposal for nonperturbatively defining chiral gauge theories, something that has resisted previous attempts. The proposal is a well defined field theoretic framework that contains mirror fermions with very soft form factors, which allows them to decouple, as well as ordinary fermions with conventional couplings.  The construction makes use of an extra dimension, which localizes chiral zeromodes on the boundaries, and a four dimensional gauge field extended into the bulk via classical gradient flow.  After explaining how this setup works, I consider open questions concerning the flow of topological gauge configurations, as well as possible exotic phenomenology in the Standard Model lurking at the low energy frontier.