Deconfinement and hadron properties at extremes of temperature and density

Conference · Sat Aug 01 04:00:00 EDT 1998

OSTI ID:666047

Blaschke, D ^[1]; Roberts, C D ^[2]

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1. Univ. Rostock (Germany). Fachbereich Physik
2. Argonne National Lab., IL (United States). Physics Div.

After introducing essential, qualitative concepts and results, the authors discuss the application of Dyson-Schwinger equations to QCD at finite T and {mu}. They summarize the calculation of the critical exponents of two-light-flavor QCD using the chiral and thermal susceptibilities; and an algebraic model that elucidates the origin of an anticorrelation between the {mu}- and T-dependence of a range of meson properties. That model also provides an algebraic understanding of why the finite-T behavior of bulk thermodynamic properties is mirrored in their {mu}-dependence, and why meson masses decrease with {mu} even though f{sub {pi}} and {minus}<{anti q}q> increase. The possibility of diquark condensation is canvassed. Its realization is uncertain because it is contingent upon an assumption abut the quark-quark scattering kernel that is demonstrably false in some applications; e.g., it predicts the existence of colored diquarks in the strong interaction spectrum, which are not observed.

• Research Organization: Argonne National Lab., Physics Div., IL (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 666047
• Report Number(s): ANL/PHY/CP--96903; CONF-980461--; ON: DE98057948
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BAG MODEL
CHIRAL SYMMETRY
MESONS
PROPAGATOR
QUANTUM CHROMODYNAMICS
SCHWINGER FUNCTIONAL EQUATIONS
STRONG INTERACTIONS
THERMODYNAMIC PROPERTIES