Finite-size effects on the strangelets with different coupling strengths

Wen, Xin-Jian; Yang, Dong-Hong; Su, Shou-Zheng

doi:10.1088/0954-3899/38/11/115001

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…To show the effect of different coupling constants, we adopt three values of g. In the quasiparticle model, the parameter g stands for the coupling strength and it is related to the strong interaction coupling constant α s by g = √ 4πα s . Therefore, the g value has a large effect on the stability of SQM [45]. To satisfy the requirement of QCD asymptotic freedom, the running property of the coupling parametrization should be considered.…”

Section: A the Stability Property Of Bulk Magnetized Sqmmentioning

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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Section: A the Stability Property Of Bulk Magnetized Sqmmentioning

confidence: 99%

Magnetized strange quark matter in a quasiparticle description

Wen

Yang

et al. 2012

Phys. Rev. D

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“…Following the original idea in Refs. [68,69], the quasiparticle model with a fixed strong coupling has been used to study the finite-size strangelets [70] and the medium effects on the surface tension of strangelets [71,72]. Later, this model is extended to include the running strong coupling with a chemical potential dependent renormalization subtraction point, which is constrained by the Cauchy condition in the chemical potential space [73].…”

Section: Introductionmentioning

confidence: 99%

Landau quantization and spin polarization of cold magnetized quark matter

Lu,

Xu,

Wen

et al. 2022

Preprint

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The magnetic field and density behaviors of various thermodynamic quantities of strange quark matter under compact star conditions are investigated in the framework of the thermodynamically self-consistent quasiparticle model. For individual species, a larger number density ni leads to a larger magnetic field strength threshold that align all particles parallel or antiparallel to the magnetic field. Accordingly, in contrast to the finite baryon density effect which reduces the spin polarization of magnetized strange quark matter, the magnetic field effect leads to an enhancement of it. We also compute the sound velocity as a function of the baryon density and find the sound velocity shows an obvious oscillation with increasing density. Except for the oscillation, similar to the zero-magnetic field case that the sound velocity grows with increasing density and approaches the conformal limit V 2 s = 1/3 at high densities from below.

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“…Following the original idea in Refs. [68,69], the quasiparticle model with a fixed strong coupling has been used to study the finite-size strangelets [70] and the medium effects on the surface tension of strangelets [71,72]. Later, this model is extended to include the running strong coupling with a chemical-potential-dependent renormalization subtraction point, which is constrained by the Cauchy condition in the chemical potential space [73].…”

Section: Introductionmentioning

confidence: 99%

Landau quantization and spin polarization of cold magnetized quark matter *

Lù¹,

Xu²,

Wen³

et al. 2022

Chinese Phys. C

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The magnetic field and density behaviors of various thermodynamic quantities of strange quark matter under compact star conditions are investigated in the framework of the thermodynamically self-consistent quasiparticle model. For individual species, a larger number density $n_i$ leads to a larger magnetic field strength threshold that align all particles parallel or antiparallel to the magnetic field. Accordingly, in contrast to the finite baryon density effect which reduces the spin polarization of magnetized strange quark matter, the magnetic field effect leads to an enhancement of it. We also compute the sound velocity as a function of the baryon density and find the sound velocity shows an obvious oscillation with increasing density. Except for the oscillation, similar to the zero-magnetic field case that the sound velocity grows with increasing density and approaches the conformal limit $V_s^2=1/3$ at high densities from below.

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Finite-size effects on the strangelets with different coupling strengths

Cited by 3 publications

References 38 publications

Magnetized strange quark matter in a quasiparticle description

Magnetized strange quark matter in a quasiparticle description

Landau quantization and spin polarization of cold magnetized quark matter

Landau quantization and spin polarization of cold magnetized quark matter *

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