Comment on Damping of energetic gluons and quarks in high-temperature QCD''

Journal Article · Wed Jul 01 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.482· OSTI ID:7277828

Rebhan, A ^[1]

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1. Theory Division, CERN, CH-1211 Geneva 23 (Switzerland)

Burgess and Marini have recently pointed out that the leading contribution to the damping rate of energetic gluons and quarks in the QCD plasma, given by {gamma}={ital cg}{sup 2}ln(1/{ital g}){ital T}, can be obtained by simple arguments obviating the need of a fully resummed perturbation theory as developed by Braaten and Pisarski. Their calculation confirmed previous results of Braaten and Pisarski, but contradicted those proposed by Lebedev and Smilga. While agreeing with the general considerations made by Burgess and Marini, I correct their actual calculation of the damping rates, which is based on a wrong expression for the static limit of the resummed gluon propagator. The effect of this, however, turns out to be canceled fortuitously by another mistake, so as to leave all of their conclusions unchanged. I also verify the gauge independence of the results, which in the corrected calculation arises in a less obvious manner.

• OSTI ID: 7277828
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 46:1; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662230* -- Quantum Chromodynamics-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
DAMPING
ELEMENTARY PARTICLES
ENERGY
FIELD THEORIES
GLUONS
MATTER
PERTURBATION THEORY
POSTULATED PARTICLES
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MATTER
SELF-ENERGY
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K