Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-flavour and two-flavour pairing in three-flavour quark matter   We study single-flavour quark pairing ("self-pairing") in
colour-superconducting phases of quark matter, paying particular attention to
the difference between scenarios where all three flavours undergo
single-flavour pairing, and scenarios where two flavours pair with each other
("2SC" pairing) and the remaining flavour self-pairs. We perform our
calculations in the mean field approximation using a pointlike four-fermion
interaction based on single gluon exchange. We confirm the result from previous
weakly-coupled-QCD calculations, that when all three flavours self-pair the
favored channel for each is colour-spin-locked (CSL) pseudoisotropic pairing.
However, we find that when the up and down quarks undergo 2SC pairing, they
induce a colour chemical potential that disfavors the CSL phase. The strange
quarks then self-pair in a "polar" channel that breaks rotational invariance,
although the CSL phase may survive in a narrow range of densities.

31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys