paper

Derivative expansion for the effective action of chiral gauge fermions. The abnormal parity component

arXiv:hep-th/0012174 · doi:10.1007/s100520100641

Abstract

Explicit exact formulas are presented, for the leading order term in a strict chiral covariant derivative expansion, for the abnormal parity component of the effective action of two- and four-dimensional Dirac fermions in presence of scalar, pseudo-scalar, vector and axial vector background fields. The formulas hold for completely general internal symmetry groups and general configurations. In particular the scalar and pseudo-scalar fields need not be on the chiral circle.

45 pages, REVTEX, no figures. Minor corrections

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