Medium effects on the surface tension of strangelets in the extended quasiparticle model

Wen, Xin-Jian; Li, J. Y.; Liang, Jun; Peng, Guang-Xiong

doi:10.1103/physrevc.82.025809

Cited by 62 publications

(66 citation statements)

References 40 publications

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“…Surface tension is a key ingredient in the understanding of such droplets and the associated phenomenology [13][14][15][16]. In the case of mixed phases, it is known that there is a critical value for the surface tension of the order of tens of MeV / fm 2 [17][18][19][20] which determines two possible scenarios.…”

Section: Introductionmentioning

confidence: 99%

Surface tension of highly magnetized degenerate quark matter

Lugones

Grunfeld

2017

Phys. Rev. C

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We study the surface tension of highly magnetized three flavor quark matter within the formalism of multiple reflection expansion (MRE). Quark matter is described as a mixture of free Fermi gases composed by quarks u, d, s and electrons, in chemical equilibrium under weak interactions. Due to the presence of strong magnetic fields the particles' transverse motion is quantized into Landau levels, and the surface tension has a different value in the parallel and transverse directions with respect to the magnetic field. We calculate the transverse and longitudinal surface tension for different values of the magnetic field and for quark matter drops with different sizes, from a few fm to the bulk limit. For baryon number densities between 2 − 10 times the nuclear saturation density, the surface tension falls in the range 2 − 20 MeV /fm 2 . The largest contribution comes from strange quarks which have a surface tension an order of magnitude larger than the one for u or d quarks and more than two orders of magnitude larger than for electrons. Our results show that the total surface tension is quite insensitive to the size of the drop. We also find that the surface tensions in the transverse and parallel directions are almost unaffected by the magnetic field if eB is below ∼ 5 × 10 −3 GeV 2 . Nevertheless, for higher values of eB, there is a significant increase in the parallel surface tension and a significant decrease in the transverse one with respect to the unmagnetized case.

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Section: Introductionmentioning

confidence: 99%

Surface tension of highly magnetized degenerate quark matter

Lugones

Grunfeld

2017

Phys. Rev. C

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“…For comparison purpose, we have also plotted the previous results in Ref. [26] by setting B m = 0. The solid curves are for magnetized SQM, while the dotted ones are for the corresponding non-magnetized SQM.…”

Section: A the Stability Property Of Bulk Magnetized Sqmmentioning

confidence: 99%

“…One can also use a running coupling constant g(Q/Λ) in the equations of state of strange matter instead of a constant g [29]. In our recent work by using phenomenological running coupling [26], the quark masses were demonstrated to decrease with increasing densities at a proper region.…”

Section: Thermodynamic Treatment In a Strong Magnetic Fieldmentioning

confidence: 99%

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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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“…When the first order phase transition takes place, the two phases with different thermal properties, the dynamical chiral symmetry breaking (DCSB or Nambu) phase and the dynamical chiral symmetry preserved (DCS or Wigner) phase, meet at an interface. This interface effect, which is measured by the interface tension and related quantities such as the interface entropy and the critical size of the bubble [81,82], has been investigated by lattice QCD simulation [83] and many effective model calculations [74,[76][77][78][79][80][81][82][84][85][86][87][88][89][90]. On the other hand, it has been found for a long time that in the hadronization process there exists a so called entropy puzzle, that is, the entropy density of the quark-gluon phase is always larger than that of the hadron phase in both the hadronization (DCS to DCSB) process and the deconfinement (DCS restoration) process [81,86,[91][92][93], and thus, the hadronization process seems to be impossible according to the increasing entropy principle.…”

Section: Introductionmentioning

confidence: 99%

Interface effect in QCD phase transitions via Dyson-Schwinger equation approach

Gao

Liu

2016

Phys. Rev. D

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With the chiral susceptibility criterion we obtain the phase diagram of strong-interaction matter in terms of temperature and chemical potential in the framework of Dyson-Schwinger equations (DSEs) of QCD. After calculating the pressure and some other thermodynamic properties of the matter in the DSE method, we get the phase diagram in terms of temperature and baryon number density. We also obtain the interface tension and the interface entropy density to describe the inhomogeneity of the two phases in the coexistence region of the first order phase transition. After including the interface effect, we find that the total entropy density of the system increases in both the deconfinement (dynamical chiral symmetry restoration) and the hadronization (dynamical chiral symmetry breaking) processes of the first order phase transitions and thus solve the entropy puzzle in the hadronization process.

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Medium effects on the surface tension of strangelets in the extended quasiparticle model

Cited by 62 publications

References 40 publications

Surface tension of highly magnetized degenerate quark matter

Surface tension of highly magnetized degenerate quark matter

Magnetized strange quark matter in a quasiparticle description

Interface effect in QCD phase transitions via Dyson-Schwinger equation approach

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