# Chiral fermions in gravity: anomalies and path integral methods

#### Chiral fermions in gravity: anomalies and path integral methods

- Event time: 2:00pm until 3:00pm
- Event date: 5th December 2023
- Speaker: Rémy Larue (Université Grenoble-Alpes)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) (James Clerk Maxwell Building (JCMB)) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

Title: Chiral fermions in gravity: anomalies and path integral methods

Abstract: Dealing with chiral fermions in gravity can prove a difficult task, which is not easily handled with Feynman diagrams. The path integral approach provides a powerful alternative, both on the formal and practical aspects. Recent improvements allowed to deal with chiral fermions in gravity, hence filling a gap in the literature. It then helped solving a controversy that spanned over a decade, concerning the presence or absence of the CP-odd Pontryagin density in the trace anomaly of the neutrino. In this talk, we describe how the path integral can be properly defined and used to compute quantum anomalies, and more generally we outline how it can be used to obtain a generic one-loop effective action for chiral fermions.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..