Strange hadronic matter in a chiral quark mean-field model

Wang, P.; Zhang, Z. Y.; Yu, YW; Su, Ru-Keng; Song, Qingbao

doi:10.1016/s0375-9474(00)00580-7

Cited by 48 publications

(86 citation statements)

References 43 publications

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“…Although these chiral models indicate that the effective nucleon mass decreases with density, there is no phase transition with respect to chiral symmetry restoration. As an extension we proposed the chiral SU(3) quark mean field model and investigated hadronic and quark matter [29]- [31]. The chiral symmetry restoration of nuclear matter was also studied in this model and a phase transition was found [32].…”

Section: Introductionmentioning

confidence: 99%

Chiral symmetry restoration in strange hadronic matter

et al. 2004

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The phase transition of chiral symmetry restoration in strange hadronic matter is studied in the chiral SU(3) quark mean field model. When the baryon density is larger than a critical density ρ c , the minimal energy density of the system occurs at the point where the effective masses of nucleon, Λ or Ξ drop to zero. The physical quantities change discontinuously at this density and the system will be in the phase of chiral symmetry restoration. A rich phase structure of strange hadronic matter with different strangeness fraction f s is obtained.

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Section: Introductionmentioning

confidence: 99%

Chiral symmetry restoration in strange hadronic matter

et al. 2004

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“…Up to now, we did not consider the additional coupling between strange quark and scalar mesons L h , which is important to obtain reasonable hyperon potentials in hadronic matter [31]. When the additional term is included, the effective quark masses versus baryon density for parameter set A are given in Fig.7.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…the chiral-invariant scalar meson L ΣΣ and vector meson L V V self-interaction terms in the mean field approximation [31,33] …”

Section: The Modelmentioning

confidence: 99%

“…In order to obtain reasonable hyperon potentials in hadronic matter we include the additional coupling between strange quarks and scalar mesons σ and ζ [31]. This term is expressed as…”

Section: The Modelmentioning

confidence: 99%

“…In studying hadronic matter, we proposed a chiral SU(3) quark mean field model. This chiral quark model was applied to investigate the properties of strange hadronic matter and multi-strange hadronic systems [31,32]. In this paper, we want to use this model to discuss the stability of strange quark matter.…”

Section: Introductionmentioning

confidence: 99%

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Strange quark matter in a chiral SU(3) quark mean field model

et al. 2003

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We apply the chiral SU(3) quark mean field model to investigate strange quark matter. The stability of strange quark matter with different strangeness fraction is studied. The interaction between quarks and vector mesons destabilizes the strange quark matter. If the strength of the vector coupling is the same as in hadronic matter, strangelets can not be formed. For the case of β equilibrium, there is no strange quark matter which can be stable against hadron emission even without vector meson interactions.

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