Phase Structure of Two-Flavor QCD at Finite Chemical Potential

Journal Article · Fri Jan 14 04:00:00 EST 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.106.022002· OSTI ID:21532239

Braun, Jens ^[1]; Haas, Lisa M; Pawlowski, Jan M ^[2]; Marhauser, Florian ^[3]

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1. Theoretisch-Physikalisches Institut, Friedrich-Schiller University Jena, Max-Wien-Platz 1, 07743 Jena (Germany)
2. Institut fuer Theoretische Physik, University of Heidelberg, Philosophenweg 16, 62910 Heidelberg (Germany)
3. ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany)

We study the phase diagram of two-flavor QCD at imaginary chemical potentials in the chiral limit. To this end we compute order parameters for chiral symmetry breaking and quark confinement. The interrelation of quark confinement and chiral symmetry breaking is analyzed with a new order parameter for the confinement phase transition. We show that it is directly related to both the quark density as well as the Polyakov loop expectation value. Our analytical and numerical results suggest a close relation between the chiral and the confinement phase transition.

• OSTI ID: 21532239
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 106; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
CHIRAL SYMMETRY
CHIRALITY
COMPOSITE MODELS
CONFINEMENT
DENSITY
DIMENSIONLESS NUMBERS
EXPECTATION VALUE
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
FLAVOR MODEL
MATHEMATICAL MODELS
ORDER PARAMETERS
PARTICLE MODELS
PARTICLE PROPERTIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POTENTIALS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
SYMMETRY
SYMMETRY BREAKING