scholarly journals Two-layer compact stars with crystalline quark matter: Screening effect on the tidal deformability

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
S. Y. Lau ◽  
P. T. Leung ◽  
L.-M. Lin
Keyword(s):  
Quark Matter ◽  
Compact Stars ◽  
Screening Effect

scholarly journals Charge screening effect on hadron-quark mixed phase in compact stars

2006 ◽  
Author(s):  
Tomoki Endo ◽  
Toshiki Maruyama ◽  
Satoshi Chiba ◽  
Toshitaka Tatsumi
Keyword(s):  
Mixed Phase ◽  
Compact Stars ◽  
Screening Effect ◽  
Charge Screening

scholarly journals Deconfinement signals from pulsar timing

2000 ◽  
Vol 177 ◽  
pp. 603-604 ◽  
Author(s):  
Hovik Grigorian ◽  
Gevorg Poghosyan ◽  
Edvard Chubarian ◽  
David Blaschke
Keyword(s):  
General Relativity ◽  
Quark Matter ◽  
Compact Star ◽  
Baryon Number ◽  
Rotational Frequency ◽  
Compact Stars ◽  
Pulsar Timing

AbstractThe occurence of a quark matter core in rotating compact stars has been investigated within general relativity as a function of both the rotational frequency and the total baryon number. We demonstrate that the deviation of the braking index fromn= 3 signals not only the occurence but also the size of a quark matter core in a pulsar. We suggest that in systems with mass accretion onto a rapidly rotating compact star a spin-down to spin-up transition might signal a deconfinement transition in its interior.

scholarly journals Strange matter in compact stars

2018 ◽  
Vol 171 ◽  
pp. 08001 ◽  
Author(s):  
Thomas Klähn ◽  
David B. Blaschke
Keyword(s):  
Quark Matter ◽  
Strange Quark ◽  
Chiral Symmetry Breaking ◽  
Dense Matter ◽  
Strange Quark Matter ◽  
Compact Stars ◽  
Hadronic Matter ◽  
Model Description ◽  
Severe Problem ◽  
Strange Matter

We discuss possible scenarios for the existence of strange matter in compact stars. The appearance of hyperons leads to a hyperon puzzle in ab-initio approaches based on effective baryon-baryon potentials but is not a severe problem in relativistic mean field models. In general, the puzzle can be resolved in a natural way if hadronic matter gets stiffened at supersaturation densities, an effect based on the quark Pauli quenching between hadrons. We explain the conflict between the necessity to implement dynamical chiral symmetry breaking into a model description and the conditions for the appearance of absolutely stable strange quark matter that require both, approximately masslessness of quarks and a mechanism of confinement. The role of strangeness in compact stars (hadronic or quark matter realizations) remains unsettled. It is not excluded that strangeness plays no role in compact stars at all. To answer the question whether the case of absolutely stable strange quark matter can be excluded on theoretical grounds requires an understanding of dense matter that we have not yet reached.

Effects of quark matter superfluidity on compact stars cooling

1991 ◽  
Vol 24 (2) ◽  
pp. 160-161 ◽  
Author(s):  
O.G. Benvenuto ◽  
H. Vucetich ◽  
J.E. Horvath
Keyword(s):  
Quark Matter ◽  
Compact Stars

scholarly journals Tidal deformations of compact stars with crystalline quark matter

2017 ◽  
Vol 95 (10) ◽  
Author(s):  
S. Y. Lau ◽  
P. T. Leung ◽  
L.-M. Lin
Keyword(s):  
Quark Matter ◽  
Compact Stars ◽  
Tidal Deformations

scholarly journals On thermal nucleation of quark matter in compact stars

2010 ◽  
Vol 37 (9) ◽  
pp. 094066 ◽  
Author(s):  
B W Mintz ◽  
E S Fraga ◽  
J Schaffner-Bielich ◽  
G Pagliara
Keyword(s):  
Quark Matter ◽  
Compact Stars ◽  
Thermal Nucleation

scholarly journals Quark star matter at finite temperature in a quasiparticle model

2021 ◽  
Vol 81 (7) ◽  
Author(s):  
Peng-Cheng Chu ◽  
Yao-Yao Jiang ◽  
He Liu ◽  
Zhen Zhang ◽  
Xiao-Min Zhang ◽  
...  
Keyword(s):  
Quark Matter ◽  
Strange Quark ◽  
Large Mass ◽  
Compact Stars ◽  
Heating Process ◽  
Maximum Mass ◽  
Quark Stars ◽  
Star Evolution ◽  
Quasiparticle Model ◽  
Effects Of Temperature

AbstractWe study the thermodynamic properties of asymmetric quark matter, large mass quark stars (QSs), and proto-quark stars (PQSs) within the quasiparticle model. Considering the effects of temperature within quasiparticle model can significantly influence the EOS and the entropy of strange quark matter (SQM), quark fractions in SQM, as well as the tidal deformability and the maximum mass of PQSs along the star evolution line. Our results indicate that the recent discovered heavy compact stars PSR J0348+0432, MSR J0740+6620, PSR J2215+5135, and especially the GW190814’s secondary component $$m_2$$ m 2 can be well described as QSs within the quasiparticle model. The tidal deformability for the QSs describing the heavy compact stars is extremely large, which can not well describe GW170817 as QSs, and the effects of the temperature in the heating process along the star evolution will further increase the tidal deformability and the maximum mass of PQSs.

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