Effective Action in a General Chiral Model: Next to Leading Order Derivative Expansion in the Worldline Method

Details Effective Action in a General Chiral Model: Next to Leading Order Derivative Expansion in the Worldline Method Effective Action in a General Chiral Model: Next to Leading Order Derivative Expansion in the Worldline Method

2007-08-06

arxiv.org/abs/0708.0759v2

Nucl.Phys.B793:425-450,2008

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, minor changes, published version

Scientific paper

10.1016/j.nuclphysb.2007.10.005

We present a formalism to determine the imaginary part of a general chiral
model in the derivative expansion. Our formalism is based on the worldline path
integral for the covariant current that can be given in an explicit chiral and
gauge covariant form. The effective action is then obtained by integrating the
covariant current, taking account of the anomaly.

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