We consider a Dirac fermion in a metric-axial-tensor (MAT) background. By regulating it with Pauli–Villars fields we analyze and compute its full anomaly structure. Appropriate limits of the MAT background allows to recover the anomalies of Dirac and Weyl fermions in the usual curved spacetime, obtaining in particular the trace anomaly of a chiral fermion, which has been the object of recent analyses.

Axial gravity and anomalies of fermions

Bastianelli F.
;
2020

Abstract

We consider a Dirac fermion in a metric-axial-tensor (MAT) background. By regulating it with Pauli–Villars fields we analyze and compute its full anomaly structure. Appropriate limits of the MAT background allows to recover the anomalies of Dirac and Weyl fermions in the usual curved spacetime, obtaining in particular the trace anomaly of a chiral fermion, which has been the object of recent analyses.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/757586
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