Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining crystalline color superconducting quark matter with
  gravitational-wave data   We estimate the maximum equatorial ellipticity sustainable by compact stars
composed of crystalline color-superconducting quark matter. For the
theoretically allowed range of the gap parameter $\Delta$, the maximum
ellipticity could be as large as $10^{-2}$, which is about 4 orders of
magnitude larger than the tightest upper limit obtained by the recent science
runs of the LIGO and GEO600 gravitational wave detectors based on the data from
78 radio pulsars. We point out that the current gravitational-wave strain upper
limit already has some implications for the gap parameter. In particular, the
upper limit for the Crab pulsar implies that $\Delta$ is less than O(20) MeV
for a range of quark chemical potential accessible in compact stars, assuming
that the pulsar has a mass $1.4 M_{\odot}$, radius 10 km, breaking strain
$10^{-3}$, and that it has the maximum quadrupole deformation it can sustain
without fracturing.

32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio