Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective Action in a General Chiral Model: Next to Leading Order
  Derivative Expansion in the Worldline Method   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.

1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
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The categories of this paper are: math-ph