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Soliton Solutions of F-L Model in the Whole Range of Temperature and deconfinement Transition

Chinese Science Bulletin 1994年第6期39卷 463-468页

作者：邓胜华李家荣 Institute of Particle Physics Hua-Zhong Normal University Wuhan 430070 PRCInstitute of Particle Physics Hua-Zhong Normal University Wuhan 430070 PRC

The non-topological soliton bag model of Friedberg and Lee (F-L model), whichis developed by Goldflam and Wilets and others, has been much successful indescribing phenomenologically the static properties of hadrons and their behavior atlow energy. Particularly, with the finding of the numerical soliton solution for thespecial case of temperature being zero and bag constant B=0^+, the model affordsus a very intuitive physical explanation of the color confinement in QCD theory.For other different values of B, especially for non-trivial temperature, someinvestigation on the deconfinement transition has been made in Ref.[3], etc. byanalyzing the variation condition in which soliton solutions exist, but it remains to besettled to find the concrete solutions. In this note, we will solve directly the

关键词： soliton bag model soliton solution deconfinement phase transition.

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Discussion of thermodynamic features within the PNJL model

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Chinese Physics C 2018年第12期42卷 32-43页

作者：张金利李程明宗红石 Department of Physics Nanjing University Joint Center for Particle Nuclear Physics and Cosmology State Key Laboratory of Theoretical Physics Institute of Theoretical Physics CAS

We discuss some thermodynamical features of a QCD system within the two-flavor Polyakov loop ex- tended Nambu Jona-Lasinio （PNJL） model. Several thermodynamical quantities of interest （pressure, energy density, specific heat, speed of sound, etc.） are investigated and discussed in detail with two different forms of Polyakov loop potential. The effective coupling strength G incorporating a quark feedback （quark condensate） through operator product expansion is also discussed, as well as the relationship between color deconfinement and chiral phase crossover. We find that some thermodynamical quantities have quite different behavior for different Polyakov loop potentials. By changing the characteristic temperature To of the pure Yang-Mills feld, we find that when To becomes small, color deconfinement might happen earlier than chiral phase crossover, while their relationship can be determined via some thermodynamical quantities. Furthermore, the behavior of the thermodynamical quantities is quite different in the two different forms of Polyakov loop potential studied. Especially, one of the potentials, specific heat, has two peaks, which correspond to color deconfinement and chiral phase crossover respectively. This interesting phenomenon may shed some light on whether the inflection points at the same temperature or not for lattice QCD and of the chiral condensate and deconfinement transitions happen experimental studies.

关键词： deconfinement specific heat transition temperature

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Free quarks and antiquarks versus hadronic matter

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Chinese Physics C 2009年第9期33卷 748-752页

作者：许晓明彭茹 Department of Physics Shanghai University Department of Physics Wuhan University of Science and Technology

Meson-meson reactions A（q11q- 1 ）＋ B（q2 q-2） → q1 ＋ q-1＋ q2 ＋ q-2 in high-temperature hadronic matter are found to produce an appreciable amount of quarks and antiquarks freely moving in hadronic matter and ... 详细信息

关键词： free quarks hadronic matter deconfinement

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Scalar-isovector δ-meson mean-field and mixed phase structure in compact stars

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Natural Science 2010年第5期2卷 489-493页

作者： Grigor Bakhshi Alaverdyan 不详

The deconfinement phase transition from ha-dronic matter to quark matter in the interior of compact stars is investigated. The hadronic phase is described in the framework of relativistic mean-field (RMF) theory, when also the scalar-isovector δ-meson effective field is taken into account. The MIT bag model for describing a quark phase is used. The changes of the pa-rameters of phase transition caused by the pre- sence of δ-meson field are investigated. Finally, alterations in the integral and structure para-meters of hybrid stars due to deconfinement phase transitions are discussed.

关键词： Neutron Stars Equation of State Relativistic Mean-Field Quarks deconfinement Phase Transition

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