Weyl fermions in a non-abelian gauge background and trace anomalies
| Autor: | Bastianelli, Fiorenzo, Broccoli, Matteo |
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| Rok vydání: | 2019 |
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| Druh dokumentu: | Working Paper |
| DOI: | 10.1007/JHEP10(2019)241 |
| Popis: | We study the trace and chiral anomalies of Weyl fermions in a non-abelian gauge background in four dimensions. Using a Pauli-Villars regularization we identify the trace anomaly, proving that it can be cast in a gauge invariant form, even in the presence of the non-abelian chiral anomaly, that we rederive to check the consistency of our methods. In particular, we find that the trace anomaly does not contain any parity-odd topological contribution, whose presence has been debated in the recent literature. Comment: 14 pages |
| Databáze: | arXiv |
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