Polyakov-Nambu-Jona-Lasinio model with a Vandermonde term

We extend the Polyakov-Nambu-Jona-Lasinio model for two degenerate flavors by including the effect of the SU(3) measure with a Vandermonde term. This ensures that the Polyakov loop always remains in the domain [0, 1]. The pressure, energy density, specific heat, speed of sound, and conformal measure...

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Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 2008-05, Vol.77 (9), Article 094024
Main Authors: Ghosh, Sanjay K., Mukherjee, Tamal K., Mustafa, Munshi G., Ray, Rajarshi
Format: Article
Language:English
Subjects:
COMPARATIVE EVALUATIONS
ENERGY DENSITY
FLAVOR MODEL
ISOSPIN
LATTICE FIELD THEORY
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
QUARKS
SIMULATION
SOUND WAVES
SPECIFIC HEAT
SU-3 GROUPS
VELOCITY
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Summary:We extend the Polyakov-Nambu-Jona-Lasinio model for two degenerate flavors by including the effect of the SU(3) measure with a Vandermonde term. This ensures that the Polyakov loop always remains in the domain [0, 1]. The pressure, energy density, specific heat, speed of sound, and conformal measure show small or negligible effects from this term. However various quark number and isospin susceptibilities are all found to approach their respective ideal gas limits around 2T{sub c}. We compare our methods with other similar approaches in Polyakov-Nambu-Jona-Lasinio model and also present a quantitative comparison with lattice QCD data.
ISSN:1550-7998
0556-2821
1550-2368
1089-4918
DOI:10.1103/PhysRevD.77.094024