Trace anomalies for Weyl fermions: too odd to be true?

2023/04/18 by Abdallah, S., Franchino-Viñas, S. A., Fröb, M.
#FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Mathematical Physics (math-ph)

paper · doi:10.48550/arxiv.2304.08939

Abstract

We review recent discussions regarding the parity-odd contribution to the trace anomaly of a chiral fermion. We pay special attention to the perturbative approach in terms of Feynman diagrams, comparing in detail the results obtained using dimensional regularization and the Breitenlohner--Maison prescription with other approaches.

Related

• On the trace anomaly for Weyl fermions
• The trace anomaly for a chiral fermion
• On the Weyl anomaly for chiral fermions
• Perturbative and non-pertrubative trace anomalies
• Model-independent results on parity violation in the trace anomaly