scholarly journals Electrically charged compact stars with an interacting quark equation of state

2021 ◽  
Author(s):  
Grigoris Panotopoulos ◽  
Takol Tangphati ◽  
Ayan Banerjee
Keyword(s):  
Equation Of State ◽  
Compact Stars ◽  
Electrically Charged

QCD constraints on the equation of state for compact stars

2016 ◽  
Vol 956 ◽  
pp. 813-816
Author(s):  
E.S. Fraga ◽  
A. Kurkela ◽  
J. Schaffner-Bielich ◽  
A. Vuorinen
Keyword(s):  
Equation Of State ◽  
Compact Stars

scholarly journals Quadrupole moments of rotating compact stars

2012 ◽  
Vol 8 (S291) ◽  
pp. 536-536
Author(s):  
Martin Urbanec ◽  
John Miller ◽  
Zdenek Stuchlik
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Neutron Stars ◽  
Strange Star ◽  
Compact Stars ◽  
Quadrupole Moments ◽  
Strange Stars

AbstractWe present quadrupole moments of rotating neutron and strange stars calculated using standard Hartle Thorne approach. We demonstrate differences between neutron and strange star parameters connected with quadrupole moments and how this parameters could be, in the case of neutron stars, approximated almost independently on neutron star equation of state.

scholarly journals Electrically charged compact stars and formation of charged black holes

2003 ◽  
Vol 68 (8) ◽  
Author(s):  
Subharthi Ray ◽  
Aquino L. Espíndola ◽  
Manuel Malheiro ◽  
José P. S. Lemos ◽  
Vilson T. Zanchin
Keyword(s):  
Black Holes ◽  
Compact Stars ◽  
Charged Black Holes ◽  
Electrically Charged

scholarly journals Third family of compact stars within a nonlocal chiral quark model equation of state

2019 ◽  
Vol 99 (6) ◽  
Author(s):  
D. E. Alvarez-Castillo ◽  
D. B. Blaschke ◽  
A. G. Grunfeld ◽  
V. P. Pagura
Keyword(s):  
Equation Of State ◽  
Quark Model ◽  
Model Equation ◽  
Compact Stars ◽  
Chiral Quark Model

scholarly journals Influence of the equation of state on a compact star made of hidden-sector nucleons

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Shinji Maedan
Keyword(s):  
Equation Of State ◽  
Cold Dark Matter ◽  
Compact Star ◽  
Mean Field ◽  
Field Approximation ◽  
Compact Stars ◽  
Mean Field Approximation ◽  
Effective Theory ◽  
Hidden Sector ◽  
Two Parameters

Abstract We study a compact star made of degenerate hidden-sector nucleons which will be a candidate for cold dark matter. A hidden sector like quantum chromodynamics is considered, and as the low-energy effective theory we take the (hidden-sector) $ SU(2) $ chiral sigma model including a hidden-sector vector meson. With the mean field approximation, we find that one can treat the equation of state (EOS) of our model analytically by introducing a variable which depends on the Fermi momentum. The EOS is specified by the two parameters $ C'_{\sigma} $, $ C'_{\omega} $, and we discuss how these parameters affect the mass–radius relation for a compact star as well as the EOS. The dependence of the maximum stable mass of compact stars on the parameter $ C'_{\sigma} $ will also be discussed.

STELLAR STRUCTURE FROM QCD

2012 ◽  
Vol 18 ◽  
pp. 91-95
Author(s):  
BRUNO FRANZON ◽  
F. S. NAVARRA ◽  
DAVID FOGAÇA
Keyword(s):  
Equation Of State ◽  
Quark Gluon Plasma ◽  
Mean Field ◽  
Gluon Plasma ◽  
Field Approximation ◽  
Compact Stars ◽  
Stellar Structure ◽  
Mean Field Approximation

Using an equation of state based on a mean-field approximation for QCD (MQCD) to describe the cold quark gluon plasma we study the stellar structure of compact stars.

scholarly journals From Heavy-Ion Collisions to Compact Stars: Equation of State and Relevance of the System Size

Universe ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 14 ◽  
Author(s):  
Sylvain Mogliacci ◽  
Isobel Kolbé ◽  
W. Horowitz
Keyword(s):  
Equation Of State ◽  
Degrees Of Freedom ◽  
Compact Star ◽  
Relativistic Quantum ◽  
Finite Size ◽  
Baryon Number ◽  
System Size ◽  
Heavy Ion ◽  
Compact Stars ◽  
Heavy Ion Physics

In this article, we start by presenting state-of-the-art methods allowing us to compute moments related to the globally conserved baryon number, by means of first principle resummed perturbative frameworks. We focus on such quantities for they convey important properties of the finite temperature and density equation of state, being particularly sensitive to changes in the degrees of freedom across the quark-hadron phase transition. We thus present various number susceptibilities along with the corresponding results as obtained by lattice quantum chromodynamics collaborations, and comment on their comparison. Next, omitting the importance of coupling corrections and considering a zero-density toy model for the sake of argument, we focus on corrections due to the small size of heavy-ion collision systems, by means of spatial compactifications. Briefly motivating the relevance of finite size effects in heavy-ion physics, in opposition to the compact star physics, we present a few preliminary thermodynamic results together with the speed of sound for certain finite size relativistic quantum systems at very high temperature.

scholarly journals Hybrid equation of state with pasta phases, and third family of compact stars

2019 ◽  
Vol 100 (2) ◽  
Author(s):  
K. Maslov ◽  
N. Yasutake ◽  
D. Blaschke ◽  
A. Ayriyan ◽  
H. Grigorian ◽  
...  
Keyword(s):  
Equation Of State ◽  
Compact Stars

scholarly journals Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions

2006 ◽  
Vol 74 (3) ◽  
Author(s):  
T. Klähn ◽  
D. Blaschke ◽  
S. Typel ◽  
E. N. E. van Dalen ◽  
A. Faessler ◽  
...  
Keyword(s):  
Equation Of State ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Density ◽  
Compact Stars ◽  
Nuclear Equation Of State ◽  
Ion Collisions
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