A revised approach of the two phase model for quark-gluon deconfinement phase transition

Pin-zhen, Bi; Shi, Yongjun

doi:10.1007/s002880050520

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…A purely temperature-dependent bag constant, Φ(T ), without mass modifications on the other hand is inconsistent. The same is related to the situation when temperature-dependent masses without the background term are used [29]. To go in more detail, see also the papers [13].…”

Section: Quasiparticle Spectramentioning

confidence: 95%

Toward thermodynamic consistency of quasiparticle picture

2003

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The purpose of the present article is to call attention to some realistic quasiparticle-based description of the quark/gluon matter and its consistent implementation in thermodynamics. A simple and transparent representation of the thermodynamical consistency conditions is given. This representation allows one to review critically and systemize available phenomenological approaches to the deconfinement problem with respect to their thermodynamical consistency. A particular attention is paid to the development of a method for treating the string screening in the dense matter of unbound color charges. The proposed method yields an integrable effective pair potential which can be incorporated into the mean-field picture. The results of its application are in reasonable agreement with lattice data on the QCD thermodynamics.

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Section: Quasiparticle Spectramentioning

confidence: 95%

Toward thermodynamic consistency of quasiparticle picture

2003

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Hadronic chiral mean field models at extreme temperatures and densities

Delfino

Chiapparini

Bracco

et al. 2001

J. Phys. G: Nucl. Part. Phys.

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We study recently developed chiral mean field models under extreme conditions of temperature (T ) and density (ρ). The thermal vacuum phase transition (ρ = 0 and high T ), present in the Walecka model, also appears in some of the proposed models. A hadronic phase transition to a quark-gluon plasma phase (QGP) at ρ = 0 is also shown in the T-ρ phase diagram. From this diagram we see that, at ρ = 0, the critical temperature T c is not sensitive to the employed hadronic model whereas when ρ increases and T decreases the hadronic-QGP two-phase transition becomes strongly model dependent. Particular cases of the models at zero temperature and high density are discussed.

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Hadronic entropy enhancement and low density QGP

Delfino¹,

Silva²,

Malheiro³

et al. 2002

J. Phys. G: Nucl. Part. Phys.

107

343

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Recent studies show that for central collisions the rising of the incident energy from AGS to RHIC decreases the value of the chemical potential in the Hadron-QGP phase diagram. Thus, the formation of QGP at RHIC energies in central collisions may be expected to occur at very small values of the chemical potential. Using many different relativistic mean-field hadronic models (RMF) at this regime we show that the critical temperature for the Hadron-QGP transition is hadronic model independent. We have traced back the reason for this and conclude that it comes from the fact that the QGP entropy is much larger than the hadronic entropy obtained in all the RMF models. We also find that almost all of these models present a strong entropy enhancement in the hadronic sector coming from the baryonic phase transition to a nucleon-antinucleon plasma. This result is in agreement with the recent data obtained in the STAR collaboration at RHIC where it was found a rich proton-antiproton matter.

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A revised approach of the two phase model for quark-gluon deconfinement phase transition

Cited by 3 publications

References 21 publications

Toward thermodynamic consistency of quasiparticle picture

Toward thermodynamic consistency of quasiparticle picture

Hadronic chiral mean field models at extreme temperatures and densities

Hadronic entropy enhancement and low density QGP

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