Scattering amplitudes in hot gauge theories

A consistent method for the perturbative calculation of scattering amplitudes in hot gauge theories is developed. It involves the resummation of a subset of thermal fluctuations, termed hard thermal loops, into effective propagators and vertices. The damping rate of a heavy fermion is computed as an...

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Bibliographic Details
Published in:Physical review letters 1989-09, Vol.63 (11), p.1129-1132
Main Author: PISARSKI, R. D
Format: Article
Language:English
Subjects:
645400 - High Energy Physics- Field Theory
AMPLITUDES
BOSONS
Classical and quantum physics: mechanics and fields
ENERGY RANGE
Exact sciences and technology
FERMIONS
FIELD THEORIES
FLUCTUATIONS
FUNCTIONS
GAUGE INVARIANCE
INVARIANCE PRINCIPLES
MEV RANGE
MEV RANGE 100-1000
PERTURBATION THEORY
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SCATTERING AMPLITUDES
Theory of quantized fields
VARIATIONS
VERTEX FUNCTIONS
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Summary:A consistent method for the perturbative calculation of scattering amplitudes in hot gauge theories is developed. It involves the resummation of a subset of thermal fluctuations, termed hard thermal loops, into effective propagators and vertices. The damping rate of a heavy fermion is computed as an example.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.63.1129