Determination of QCD phase diagram from the imaginary chemical potential region

Journal Article · Fri May 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.096001· OSTI ID:21308468

Sakai, Yuji; Kashiwa, Kouji; Yahiro, Masanobu ^[1]; Kouno, Hiroaki ^[2]; Matsuzaki, Masayuki ^[3]

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1. Department of Physics, Graduate School of Sciences, Kyushu University, Fukuoka 812-8581 (Japan)
2. Department of Physics, Saga University, Saga 840-8502 (Japan)
3. Department of Physics, Fukuoka University of Education, Munakata, Fukuoka 811-4192 (Japan)

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.

• OSTI ID: 21308468
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 9; Other Information: DOI: 10.1103/PhysRevD.79.096001; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
INTERACTIONS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
POTENTIALS
QUANTUM CHROMODYNAMICS
QUARKS
RELIABILITY
SIMULATION