Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Manifestation of Instabilities in Nambu-Jona-Lasinio type models   We study a Nambu-Jona-Lasinio (NJL) type model with two-flavor quark matter
in $\beta$-equilibrium. It turns out that the system develops instabilities in
the dispersion relations of the diquark fields, i.e., the velocity squared
$v^2$ becomes negative in a certain region of the electron chemical potential.
The critical point is the same as that of the chromomagnetic instability. The
results imply the existence of spatially inhomogeneous diquark condensates in
the genuine vacuum. We also discuss gauge equivalent classes between the
inhomogeneous diquark condensates and gluon condensates.

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The categories of this paper are: astro-ph
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The categories of this paper are: math
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: physics
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
16
The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex