Deconfinement and Hadron Properties at Extremes of Temperature and Density

Details Deconfinement and Hadron Properties at Extremes of Temperature and Density Deconfinement and Hadron Properties at Extremes of Temperature and Density

1998-07-02

arxiv.org/abs/nucl-th/9807008v2

Nucl.Phys.A642:197-209,1998

Physics

Nuclear Physics

Nuclear Theory

Summary of presentations at the Workshop on QCD at Finite Baryon Density, Bielefeld, Germany, 27-30/April/1998, 13 pages, 9 fi

Scientific paper

10.1016/S0375-9474(98)00517-X

After introducing essential, qualitative concepts and results, we discuss the application of Dyson-Schwinger equations to QCD at finite T and mu. We summarise the calculation of the critical exponents of two-light-flavour 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 behaviour of bulk thermodynamic properties is mirrored in their mu-dependence, and why meson masses decrease with mu even though f_pi and - increase. The possibility of diquark condensation is canvassed. Its realisation is uncertain because it is contingent upon an assumption about the quark-quark scattering kernel that is demonstrably false in some applications; e.g., it predicts the existence of coloured diquarks in the strong interaction spectrum, which are not observed.

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