A Hybrid Model for QCD Deconfining Phase Boundary

Abstract

Intensive search for a proper and realistic equations of state (EOS) is still continued for studying the phase diagram existing between quark gluon plasma (QGP) and hadron gas (HG) phases. Lattice calculations provide such EOS for the strongly interacting matter at finite temperature ($T$) and vanishing baryon chemical potential (${\mu }_B$). These calculations are of limited use at finite ${\mu }_B$ due to the appearance of notorious sign problem. In the recent past, we had constructed a hybrid model description for the QGP as well as HG phases where we make use of a new excluded-volume model for HG and a thermodynamically-consistent quasiparticle model for the QGP phase and used them further to get QCD phase boundary and a critical point. Since then many lattice calculations have appeared showing various thermal and transport properties of QCD matter at finite $T$ and ${\mu }_B=0$. We test our hybrid model by reproducing the entire data for strongly interacting matter and predict our results at finite ${\mu }_B$ so that they can be tested in future. Finally we demonstrate the utility of the model in fixing the precise location, the order of the phase transition and the nature of CP existing on the QCD phase diagram. We thus emphasize the suitability of the hybrid model as formulated here in providing a realistic EOS for the strongly interacting matter.

22 pages, 10 figures. corrected version published in Physical Review D. arXiv admin note: substantial text overlap with arXiv:1201.0445

References in corpus (53)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Signatures of the Tricritical Point in QCD
• The QCD equation of state with dynamical quarks
• Critical point of QCD at finite T and μ, lattice results for physical quark masses
• Non-Gaussian fluctuations near the QCD critical point
• Transport coefficients in high temperature gauge theories: (II) Beyond leading log
• Transport coefficients in high temperature gauge theories: (I) Leading-log results
• QCD Equation of State and Hadron Resonance Gas
• On the Strongly-Interacting Low-Viscosity Matter Created in Relativistic Nuclear Collisions
• A calculation of the shear viscosity in SU(3) gluodynamics
• Fluctuations of conserved charges at finite temperature from lattice QCD
• Has the QCD Critical Point been Signaled by Observations at RHIC ?
• The chiral critical line of N_f=2+1 QCD at zero and non-zero baryon density
• Hadron Production in Ultra-relativistic Nuclear Collisions: Quarkyonic Matter and a Triple Point in the Phase Diagram of QCD
• The critical end point of QCD
• Transport Coefficients of Hadronic Matter near $T_c$
• QCD phase diagram and the critical point
• Recent thermodynamic results from lattice QCD analyzed within a quasi-particle model
• Bulk viscosity in quasi particle models
• The QCD phase diagram: A comparison of lattice and hadron resonance gas model calculations
• The chiral critical point of Nf=3 QCD at finite density to the order (mu/T)^4
• Dynamical quasiparticles properties and effective interactions in the sQGP
• Probing the Phase Boundary between Hadronic Matter and the Quark-Gluon-Plasma in Relativistic Heavy Ion Collisions
• A Family of Equations of State Based on Lattice QCD: Impact on Flow in Ultrarelativistic Heavy-Ion Collisions
• Transport coefficients near chiral phase transition
• Chiral transition in a finite system and possible use of finite size scaling in relativistic heavy ion collisions
• The QCD equation of state near T_0 within a quasi-particle model
• Viscosity in the excluded volume hadron gas model
• Description of Hot and Dense Hadron Gas Properties in a New Excluded-Volume model
• QCD Critical Point in a Quasiparticle Model
• Comments on quasiparticle models of quark-gluon plasma
• Chiral phase properties of finite size quark droplets in the Nambu--Jona-Lasinio model
• Viscosities in the Gluon-Plasma within a Quasiparticle Model
• Quasi-particle model of QGP - a revisit
• Bootstraping the QCD Critical Point
• Self-consistent quasiparticle model for 2, 3 and (2+1) flavor QGP
• Recent results on QCD thermodynamics: lattice QCD versus Hadron Resonance Gas model
• Quark number susceptibility around the critical end point
• Quark-Gluon Bags with Surface Tension
• The Speed of Sound in Hadronic Matter
• Quasiparticle Model of Quark-Gluon Plasma at Imaginary Chemical Potential
• Strongly Coupled Quark Gluon Plasma (SCQGP)
• The Hagedorn temperature Revisited
• The Phase Diagram of Hadronic Matter
• Flavor Diagonal and Off-Diagonal Susceptibilities in a Quasiparticle Model of the Quark-Gluon Plasma
• Hadron-quark phase transition in a hadronic and Polyakov--Nambu--Jona-Lasinio models perspective
• Shear and bulk viscosities for pure glue matter
• A First Principles Estimate of Finite Size Effects in Quark-Gluon Plasma Formation
• Particle multiplicities and particle ratios in excluded volume model
• Correlations and fluctuations from lattice QCD
• On Fluctuations of Conserved Charges : Lattice Results Versus Hadron Resonance Gas
• QCD Phase Boundary and Critical Point in a Bag Model Calculation
• Freeze-out volume of hot dense fireball

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• Thermodynamical Consistency of Excluded Volume Hadron Gas Models
• Multiplicity and Pseudorapidity distributions of charged particles in asymmetric and deformed nuclear collisions in a Wounded Quark Model
• Thermoelectric response of a weakly magnetized thermal QCD medium
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• The effect of flow on Hadronic Spectra in an Excluded-Volume Model
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• Multiplicity per rapidity in Carruthers and hadron resonance gas approaches
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