Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Extended Nambu-Jona-Lasinio Model and Hidden Local Symmetry of Low
  Energy QCD   Using the standard auxiliary field method, we derive from the extended
Nambu-Jona-Lasinio model an effective meson action containing vector and
axial-vector mesons in addition to Goldstone bosons. The vector and
axial-vector mesons in this effective action transform as gauge fields of
hidden local symmetry $G_{local} = {[U(n)_L \times U(n)_R]}_{local}$. Here, the
realization of enlarged hidden local symmetry is accomplished via the
introduction of two kinds of ``compensating'' fields. For obtaining the
intrinsic-parity violating part of the action, we generalize the standard
gauged Wess-Zumino-Witten action such that it also contains two kinds of
``compensators'' in addition to the usual Goldstone bosons as well as the
vector and axial-vector mesons. This generalized gauged Wess-Zumino-Witten
action turns out to have $G_{globa} \times G_{local}$ symmetry, where
$G_{global}$ being the usual $U(n)_L \times U(n)_R$ global chiral symmetry
while $G_{local}$ being the $U(n)_L \times U(n)_R$ hidden local symmetry. This
means that $G_{local}$ has no gauge anomaly and its associated vector and
axial-vector mesons can be regarded as gauge bosons of $G_{local}$. The
introduction of the coupling with the external electroweak fields requires us
to gauge some appropriate subgroup of $G_{global}$. To perform it in consistent
with the anomaly structure of QCD is a nontrivial problem. We explain how this
can be done, following the recent suggestion by several authors.

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The categories of this paper are: funct-an
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The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat