Trace anomalies for Weyl fermions: too odd to be true?
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.
- Publication:
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arXiv e-prints
- Pub Date:
- April 2023
- DOI:
- 10.48550/arXiv.2304.08939
- arXiv:
- arXiv:2304.08939
- Bibcode:
- 2023arXiv230408939A
- Keywords:
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- High Energy Physics - Theory;
- Mathematical Physics
- E-Print:
- 19 pages, 2 figures. Contribution to "Avenues of Quantum Field Theory in Curved Spacetime", Genoa, 2022. Partially based on 2101.11382 [hep-th]