Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1993-09-26
Phys.Rev.D49:6051-6062,1994
Physics
High Energy Physics
High Energy Physics - Lattice
26 pp, RevTeX, 12 postscript figures, combined in a single shell archive file. (Also available in 13 postscript files by anony
Scientific paper
10.1103/PhysRevD.49.6051
As part of an ongoing effort to characterize the high temperature phase of QCD, in a numerical simulation using the staggered fermion scheme, we measure the quark baryon density in the vicinity of a fixed test quark at high temperature and compare it with similar measurements at low temperature and at the crossover temperature. We find an extremely weak correlation at high temperature, suggesting that small color singlet clusters are unimportant in the thermal ensemble. We also find that at $T = 0.75\ T_c$ the total induced quark number shows a surprisingly large component attributable to baryonic screening. A companion simulation of a simple flux tube model produces similar results and also suggests a plausible phenomenological scenario: As the crossover temperature is approached from below, baryonic states proliferate. Above the crossover temperature the mean size of color singlet clusters grows explosively, resulting in an effective electrostatic deconfinement.
Bernard Claude
DeGrand Thomas A.
DeTar Carleton
Gottlieb Steven
Krasnitz Alex
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