Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD at small non-zero quark chemical potentials   We study the effects of small chemical potentials associated with the three
light quark flavors in QCD. We use a low-energy effective field theory that
solely relies on the symmetries of the QCD partition function. We find three
different phases: a normal phase, a pion superfluid phase and a kaon superfluid
phase. The two superfluid phases are separated by a first order phase
transition, whereas the normal phase and either of the superfluid phases are
separated by a second order phase transition. We compute the quark-antiquark
condensate, the pion condensate and the kaon condensate in each phase, as well
as the isospin density, the strangeness density, and the mass spectrum.

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The categories of this paper are: stat
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
26
The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph