Phase diagram and critical end point for strongly-interacting quarks.

Journal Article · Thu Apr 28 00:00:00 EDT 2011 · Phys. Rev. Lett.

DOI:https://doi.org/10.1103/PhysRevLett.106.172301· OSTI ID:1019238

Qin, S -X; Chang, L; Chen, H; Roberts, C D ^[1]

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1. Physics

We introduce a method based on chiral susceptibility, which enables one to draw a phase diagram in the chemical-potential-temperature plane for strongly interacting quarks whose interactions are described by any reasonable gap equation, even if the diagrammatic content of the quark-gluon vertex is unknown. We locate a critical end point at ({mu}{sup E},T{sup E}) - (1.0,0.9)T{sub c}, where T{sub c} is the critical temperature for chiral-symmetry restoration at {micro} = 0, and find that a domain of phase coexistence opens at the critical end point whose area increases as a confinement length scale grows.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Natural Science Foundation of China (NNSFC)
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 1019238
• Report Number(s): ANL/PHY/JA-68526; TRN: US1103582
• Journal Information: Phys. Rev. Lett., Vol. 106, Issue 17 ; Apr. 28, 2011
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
CONFINEMENT
CRITICAL TEMPERATURE
PHASE DIAGRAMS
QUARKS
STRONG INTERACTIONS