Determination of QCD phase diagram from the imaginary chemical potential region

2009/02/03 by Yuji Sakai, Kouji Kashiwa, Hiroaki Kouno +2 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #hep-th #nucl-th

paper · pdf · doi:10.1103/physrevd.79.096001

published as Phys.Rev.D79: 096001, 2009 · 8 pages, 12 figures

arxiv created 2009/02/03 · openalex publication_date 2009/05/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We test the reliability of the Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model, comparing the model result with the lattice data at nonzero imaginary chemical potential. The PNJL model with the vector-type four-quark and scalar-type eight-quark interactions reproduces the lattice data on the pseudocritical temperatures of the deconfinement and chiral phase transitions. The QCD phase diagram in the real chemical potential region is predicted by the PNJL model. The critical end point survives, even if the vector-type four-quark interaction is taken into account.

Citations

• Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. I
• Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. II

Cited by

• Nonlocal Polyakov–Nambu–Jona-Lasinio model and imaginary chemical potential
• The partition function zeroes of quantum critical points
• Equation of state and heavy-quark free energy at finite temperature and density in two flavor lattice QCD with Wilson quark action
• Strong-Interaction Matter under Extreme Conditions from Chiral Quark Models with Nonlocal Separable Interactions
• Properties of 2+1-flavor QCD in the imaginary chemical potential region: A model approach

Related

• Phase diagram and thermodynamics of the PNJL model
• Status of the QCD phase diagram from lattice calculations
• Probing deconfinement in the Polyakov-loop extended Nambu-Jona-Lasinio model at imaginary chemical potential
• Constraints on the two-flavor QCD phase diagram from imaginary chemical potential
• The QCD phase diagram from analytic continuation