Baryon density correlations in high temperature hadronic matter

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.6051· OSTI ID:7239072

Bernard, C ^[1]; DeGrand, T A ^[2]; DeTar, C ^[3]; Gottlieb, S ^[4]; Krasnitz, A ^[5]; Sugar, R L ^[6]; Toussaint, D ^[7]

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1. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)
2. Physics Department, University of Colorado, Boulder, Colorado 80309 (United States)
3. Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)
4. Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
5. Interdisciplinary Project Center for Computing, ETH-Zentrum, CH-8092 Zurich (Switzerland)
6. University of California, Santa Barbara, California 93106 (United States)
7. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)

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 [ital T]=0.75 [ital T][sub [ital 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.

• DOE Contract Number: FG02-91ER40628; AC02-84ER40125; AC02-86ER40253; FG02-85ER40213
• OSTI ID: 7239072
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 49:11; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
DENSITY
QUANTUM CHROMODYNAMICS
QUARK MATTER
CORRELATIONS
ENERGY DENSITY
SIMULATION
TEMPERATURE DEPENDENCE
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
MATTER
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
662230* - Quantum Chromodynamics- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)