Damping rates for moving particles in hot QCD

Using a program of perturbative resummation I compute the damping rates for fields at nonzero spatial momentum to leading order in weak coupling in hot QCD. Sum rules for spectral densities are used to simplify the calculations. For massless fields the damping rate has an apparent logarithmic diverg...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 1993-06, Vol.47 (12), p.5589-5600
Main Author: PISARSKI, R. D
Format: Article
Language:English
Subjects:
COUPLING CONSTANTS
DAMPING
EQUATIONS
Exact sciences and technology
FIELD THEORIES
PERTURBATION THEORY
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY 662230 > Quantum Chromodynamics-- (1992-)
QUASI PARTICLES
Specific theories and interaction models
particle systematics
SUM RULES
TEMPERATURE DEPENDENCE
The physics of elementary particles and fields
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Using a program of perturbative resummation I compute the damping rates for fields at nonzero spatial momentum to leading order in weak coupling in hot QCD. Sum rules for spectral densities are used to simplify the calculations. For massless fields the damping rate has an apparent logarithmic divergence in the infrared limit, which is cut off by the screening of static magnetic fields ( magnetic mass''). This demonstrates how at high temperature even perturbative quantities are sensitive to nonperturbative phenomena.
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.47.5589