Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Composition and stability of hybrid stars with hyperons and quark
  color-superconductivity   The recent measurement of a $1.97\pm 0.04$ solar-mass pulsar places a
stringent lower bound on the maximum mass of compact stars and therefore
challenges the existence of any agents that soften the equation of state of
ultra-dense matter. We investigate whether hyperons and/or quark matter can be
accommodated in massive compact stars by constructing an equation of state
based on a combination of phenomenological relativistic hyper-nuclear density
functional and an effective model of quantum chromodynamics (the
Nambu-Jona-Lasinio model). Stable configurations are obtained with $M \ge 1.97
M_{\sun}$ featuring hyper-nuclear and quark matter in color superconducting
state if the equation of state of nuclear matter is stiff above the saturation
density, the transition to quark matter takes place at a few times the nuclear
saturation density, and the repulsive vector interactions in quark matter are
substantial.

18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th