Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 20, Issue 1, Pages 147-159Publisher
SPRINGER-VERLAG
DOI: 10.1007/s100520100639
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Explicit exact formulas are presented, up to fourth order in a strict chiral covariant derivative expansion, for the normal parity component of the Euclidean effective action of even-dimensional Dirac fermions. The bosonic background fields considered are scalar, pseudo-scaler, vector and axial vector. No assumptions are made on the internal symmetry group and, in particular, the scalar and pseudo-scalar fields need not be on the chiral circle.
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