Phase diagram of chirally imbalanced QCD matter

Journal Article · Sun May 15 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.105008· OSTI ID:21502631

Chernodub, M N ^[1]; Nedelin, A S ^[2]

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1. CNRS, Laboratoire de Mathematiques et Physique Theorique, Universite Francois-Rabelais Tours, Federation Denis Poisson, Parc de Grandmont, Tours, 37200 (France)
2. Department of Physics and Astronomy, Uppsala University, P. O. Box 803, Uppsala, S-75108 (Sweden)

We compute the QCD phase diagram in the plane of the chiral chemical potential and temperature using the linear sigma model coupled to quarks and to the Polyakov loop. The chiral chemical potential accounts for effects of imbalanced chirality due to QCD sphaleron transitions which may emerge in heavy-ion collisions. We found three effects caused by the chiral chemical potential: the imbalanced chirality (i) tightens the link between deconfinement and chiral phase transitions; (ii) lowers the common critical temperature; (iii) strengthens the order of the phase transition by converting the crossover into the strong first order phase transition passing via the second order end point. Since the fermionic determinant with the chiral chemical potential has no sign problem, the chirally imbalanced QCD matter can be studied in numerical lattice simulations.

• OSTI ID: 21502631
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 10; Other Information: DOI: 10.1103/PhysRevD.83.105008; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHIRALITY
COMPUTERIZED SIMULATION
CRITICAL TEMPERATURE
HEAVY ION REACTIONS
LATTICE FIELD THEORY
MATTER
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
QUANTUM CHROMODYNAMICS
QUARKS
SIGMA MODEL
BOSON-EXCHANGE MODELS
CONSTRUCTIVE FIELD THEORY
DIAGRAMS
FERMIONS
FIELD THEORIES
INFORMATION
MATHEMATICAL MODELS
NUCLEAR REACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
SIMULATION
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE