Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-mass twins & resolution of the reconfinement, masquerade and
  hyperon puzzles of compact star interiors   We aim at contributing to the resolution of three of the fundamental puzzles
related to the still unsolved problem of the structure of the dense core of
compact stars (CS): (i) the hyperon puzzle: how to reconcile pulsar masses of
$2\,$M$_\odot$ with the hyperon softening of the equation of state (EoS); (ii)
the masquerade problem: modern EoS for cold, high density hadronic and quark
matter are almost identical; and (iii) the reconfinement puzzle: what to do
when after a deconfinement transition the hadronic EoS becomes favorable again?
We show that taking into account the compositeness of baryons (by excluded
volume and/or quark Pauli blocking) on the hadronic side and confining and
stiffening effects on the quark matter side results in an early phase
transition to quark matter with sufficient stiffening at high densities which
removes all three present-day puzzles of CS interiors. Moreover, in this new
class of EoS for hybrid CS falls the interesting case of a strong first order
phase transition which results in the observable high mass twin star
phenomenon, an astrophysical observation of a critical endpoint in the QCD
phase diagram.

29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci