Quark spectral density and a strongly-coupled quark-gluon plasma.

Journal Article · Wed Jul 13 00:00:00 EDT 2011 · Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRevD.84.014017· OSTI ID:1021313

Qin, S; Chang, L; Liu, Y; Roberts, C D ^[1]

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1. Physics

The maximum entropy method is used to compute the dressed-quark spectral density from the self-consistent numerical solution of a rainbow truncation of QCD's gap equation at temperatures above that for which chiral symmetry is restored. In addition to the normal and plasmino modes, the spectral function also exhibits an essentially nonperturbative zero mode for temperatures extending to 1.4-1.8 times the critical temperature, T{sub c}. In the neighborhood of T{sub c}, this long-wavelength mode contains the bulk of the spectral strength and as long as this mode persists, the system may fairly be described as a strongly-coupled state of matter.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Natural Sciece Foundation of China
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 1021313
• Report Number(s): ANL/PHY/JA-68299; TRN: US201116%%709
• Journal Information: Phys. Rev. D, Vol. 84, Issue 1 ; Jul. 13, 2011
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
CRITICAL TEMPERATURE
ENTROPY
EQUATIONS
GLUONS
NUMERICAL SOLUTION
QUANTUM CHROMODYNAMICS
QUARK MATTER
QUARKS
SPECTRAL DENSITY
SPECTRAL FUNCTIONS