Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended Nambu--Jona-Lasinio Model with covariant regularization   Several advantages in the use of a Pauli-Villars regularization procedure in
extended Nambu--Jona-Lasinio models with Polyakov loop are discussed.

23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
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The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex