Thermodynamics with density and temperature dependent particle masses and properties of bulk strange quark matter and strangelets

Wen, Xin-Jian; Zhong, X.; Peng, Guang-Xiong; Shen, Peng-Nian; Ning, Puqi

doi:10.1103/physrevc.72.015204

Cited by 96 publications

(114 citation statements)

References 77 publications

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“…many physical properties of strange quark matter [12,13,14,15,16,17,18,19,20,21,22,23,24,25] and strange quark star [26,27] have been studied, and the results are in good agreement with those given by MIT bag model [28].…”

Section: Introductionsupporting

confidence: 75%

“…How to tackle the thermodynamics self-consistently is still a problem. There have been many wrangles in present references [12,13,14,15,16,17,18,19,20,21,22,23,24,25]. The difficulty comes from the first and second laws of reversible process thermodynamics expressed by Eq.…”

Section: Introductionmentioning

confidence: 99%

“…[18], respectively. The ambiguity arises from the variable ρ in m * , because it is not one of the characteristic variables of thermodynamic potential.…”

Section: Introductionmentioning

confidence: 99%

“…For the quark mass density and temperature dependent (QMDTD) model [18,19,20,21,22,23,24] with quark mass…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Consistent thermodynamic treatment for a quark-mass density-dependent model

Yin

2008

Phys. Rev. C

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The ambiguities and inconsistencies in previous thermodynamic treatments for the quark mass density-dependent model are addressed. A new treatment is suggested to obtain the self-consistent results. A new independent variable of effective mass is introduced to make the traditional thermodynamic calculation with partial derivative still practicable. The contribution from physical vacuum has been discussed. We find that the properties of strange quark matter given by quark mass density-dependent model are nearly the same as those obtained by MIT bag model after considering the contribution of the physical vacuum.

show abstract

Section: Introductionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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Consistent thermodynamic treatment for a quark-mass density-dependent model

Yin

2008

Phys. Rev. C

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“…Accordingly, the pressure P, the energy density E, and the free energy density F for SQM at zero temperature read [32] …”

Section: Thermodynamic Treatment In a Strong Magnetic Fieldmentioning

confidence: 99%

Magnetized strange quark matter in a quasiparticle description

Wen

Yang

et al. 2012

Phys. Rev. D

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The quasiparticle model is extended to investigate the properties of strange quark matter in a strong magnetic field at finite densities. For the density-dependent quark mass, self-consistent thermodynamic treatment is obtained with an additional effective bag parameter, which depends not only on the density but also on the magnetic field strength. The magnetic field makes strange quark matter more stable energetically when the magnetic field strength is less than a critical value of the order 10 7 Gauss depending on the QCD scale Λ. Instead of being a monotonic function of the density for the QCD scale parameter Λ > 126 MeV, the effective bag function has a maximum near 0.3 ∼ 0.4 fm −3 . The influence of the magnetic field and the QCD scale parameter on the stiffness of the equation of state of the magnetized strange quark matter and the possible maximum mass of strange stars are discussed.

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Quark stars in the pure pseudo-Wigner phase

Su,

Shi,

Huang

et al. 2024

Astrophys Space Sci

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In this paper, we take a different scenario of a pure quark star which is completely composed of quarks in the pseudo-Wigner phase. The equation of state (EOS) of deconfined quark stars is studied in the framework of the two-flavor NJL model, and the self-consistent mean field approximation is employed by introducing a parameter α combining the original Lagrangian and the Fierz-transformed Lagrangian, LR = (1 − α)L + αLF , to measure the weights of different interaction channels. We assume deconfinement phase transition happens along with the chiral phase transition. Thus, due to the lack of description of confinement in the NJL model, the vacuum pressure is set to confine quarks at low densities, which is the pressure corresponding to the critical point of chiral phase transition. We find that deconfined quark stars can reach over two-solar-mass, and the bag constant therefore shifts from (130 MeV) 4 to (150 MeV) 4 as α grows. In addition, the tidal deformability Λ is found to range from 253 to 482 along with the decrease of α, which satisfies the astronomical constraint of Λ < 800 for 1.4-solar-mass neutron stars.

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Thermodynamics with density and temperature dependent particle masses and properties of bulk strange quark matter and strangelets

Cited by 96 publications

References 77 publications

Consistent thermodynamic treatment for a quark-mass density-dependent model

Consistent thermodynamic treatment for a quark-mass density-dependent model

Magnetized strange quark matter in a quasiparticle description

Quark stars in the pure pseudo-Wigner phase

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