On the trace anomaly for Weyl fermions

Abstract

This note is a comment on some recent papers that have raised a controversy about the existence of the odd-parity trace anomaly in a four-dimensional theory of Weyl fermions. Without going into too technical details we explain why the methods employed in those papers cannot detect it.

20 pages, several comments and an appendix added

References in corpus (3)

• On the trace anomaly of a Weyl fermion
• On the trace anomaly of a Weyl fermion in a gauge background
• Weyl fermions in a non-abelian gauge background and trace anomalies

Cited by in corpus (3)

• CP-violating super Weyl anomaly
• CP-violating supersymmetry anomaly
• Perturbative and non-pertrubative trace anomalies