Weyl fermions in a non-abelian gauge background and trace anomalies
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Publication:2283523
DOI10.1007/JHEP10(2019)241zbMATH Open1427.83093arXiv1908.03750WikidataQ126842001 ScholiaQ126842001MaRDI QIDQ2283523
Author name not available (Why is that?)
Publication date: 2 January 2020
Published in: (Search for Journal in Brave)
Abstract: 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.
Full work available at URL: https://arxiv.org/abs/1908.03750
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