Dressed Polyakov loop and phase diagram of hot quark matter in a magnetic field

Journal Article · Wed Sep 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.054027· OSTI ID:21432979

Gatto, Raoul ^[1]; Ruggieri, Marco ^[2]

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1. Departement de Physique Theorique, Universite de Geneve, CH-1211 Geneve 4 (Switzerland)
2. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

We evaluate the dressed Polyakov loop for hot quark matter in strong magnetic field. To compute the finite temperature effective potential, we use the Polyakov extended Nambu-Jona-Lasinio model with eight-quark interactions taken into account. The bare quark mass is adjusted in order to reproduce the physical value of the vacuum pion mass. Our results show that the dressed Polyakov loop is very sensitive to the strength of the magnetic field, and it is capable to capture both the deconfinement crossover and the chiral crossover. Additionally, we self-consistently compute the phase diagram of the model. We find a tiny split of the two aforementioned crossovers as the strength of the magnetic field is increased. Concretely, for the largest value of magnetic field investigated here, eB=19m{sub {pi}}{sup 2}, the split is of the order of 10%. A qualitative comparison with other effective models and recent lattice results is also performed.

• OSTI ID: 21432979
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 82; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CAPTURE
CHIRALITY
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DIAGRAMS
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
HADRONS
INFORMATION
INTERACTIONS
MAGNETIC FIELDS
MASS
MATTER
MESONS
PARTICLE PROPERTIES
PHASE DIAGRAMS
PIONS
PSEUDOSCALAR MESONS
QUARK MATTER
QUARKS
SIMULATION