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

نویسنده

  • L. L. Salcedo
چکیده

Explicit exact formulas are presented, up to fourth order in a 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-scalar, 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. PACS numbers: 11.30.Rd 11.15.Tk 11.10.Kk

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تاریخ انتشار 2000