On discrete anomalies in chiral gauge theories
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Smith, Philip Boyle
Karasik, Avner
Lohitsiri, Nakarin
Tong, David https://orcid.org/0000-0001-9120-2174
Abstract
jats:titleAjats:scbstract</jats:sc> </jats:title>jats:pWe study two well-known SU(jats:italicN</jats:italic>) chiral gauge theories with fermions in the symmetric, anti-symmetric and fundamental representations. We give a detailed description of the global symmetry, including various discrete quotients. Recent work argues that these theories exhibit a subtle mod 2 anomaly, ruling out certain phases in which the theories confine without breaking their global symmetry, leaving a gapless composite fermion in the infra-red. We point out that no such anomaly exists. We further exhibit an explicit path to the gapless fermion phase, showing that there is no kinematic obstruction to realising these phases.</jats:p>
Description
Keywords
Anomalies in Field and String Theories, Discrete Symmetries, Confinement, Nonperturbative Effects
Journal Title
JOURNAL OF HIGH ENERGY PHYSICS
Conference Name
Journal ISSN
1029-8479
1029-8479
1029-8479
Volume Title
2022
Publisher
Springer Science and Business Media LLC
Publisher DOI
Sponsorship
Simons Foundation (567525)
STFC (ST/T000694/1)
EPSRC (EP/V047655/1)
STFC (ST/T000694/1)
EPSRC (EP/V047655/1)