Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic interactions of mesons induced by the axial-vector --
  pseudoscalar mixings   It is shown that the diagonalization of the axial-vector -- pseudoscalar
transitions in the effective meson Lagrangian in presence of electromagnetic
interactions leads to a deviation from the vector meson dominance picture which
usually arises in the Nambu - Jona-Lasinio model. The essential features of
such modification of the theory are studied. Some important examples are
considered in detail.

26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat