Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-local quark models for description of dense matter in the cores of
  neutron stars   This thesis work focuses on studying the possible existence of phase
transitions in the immediate compact remnants of core collapse supernova,
neutron stars, and the theoretical models that describe the interior of dense
matter. Specifically, we are interested in analyzing the feasibility of a
transition from hadronic matter to quark matter in the cores of these objects.
For the phase transition we will use two different formalisms: the Maxwell
formalism or abrupt phase transition and the Gibbs formalisms or mixed phase
transition. For the description of hadronic matter, we will use different
parametrizations of the relativistic mean field model with density-dependent
coupling constants. For the description of quark matter we will use an
effective nonlocal Nambu Jona-Lasinio model of three flavors with vector
interactions, in which we will include the possibility of formation of diquarks
to model a superconducting phase of color in $SU(3)$. Phase diagrams and
equations of state of quark matter at finite temperature are presented, and the
influence of that type of matter on observables associated with neutron stars
is investigated. The simplified thermal evolution of compact stars during their
formation is studied, from their state of proto-neutron stars to that of cold
neutron stars, and the results obtained are compared with recent astrophysical
observations. The results obtained indicate that the occurrence of quark matter
in the nuclei of these stars remains a promising possibility. The fact that the
use of more realistic models for the description of the dense matter in these
objects indicates the presence of quark matter inside neutron stars, could be
an answer to the question of the behavior of that kind of matter and the
determination of its corresponding equation of state.

2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg