Journal of High Energy Physics

, 2019:241 | Cite as

Weyl fermions in a non-abelian gauge background and trace anomalies

  • Fiorenza BastianelliEmail author
  • Matteo Broccoli
Open Access


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.


Anomalies in Field and String Theories Conformal Field Theory 


Open Access

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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Dipartimemo di Fisica ed AstronomiaUmversità di Bologna and INFNBolognaItaly
  2. 2.Max-Planck-lnstitut für Gmvitationsphymk (Albert-Einstein-Institut)GolmGermany

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