VISCOSITY IN HOT SCALAR FIELD-THEORY

Authors
WANG E HEINZ U ZHANG XF
Citation
E. Wang et al., VISCOSITY IN HOT SCALAR FIELD-THEORY, Physical review. D. Particles and fields, 53(10), 1996, pp. 5978-5981
Citations number
15
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
53
Issue
10
Year of publication
1996
Pages
5978 - 5981
Database
ISI
SICI code
0556-2821(1996)53:10<5978:VIHSF>2.0.ZU;2-G
Abstract
The spectral representation for general two-point Green functions in t hermo field dynamics is used to compute the spectral density of the ph i(2)-phi(2) correlation function in hot phi(4) theory. We give a compa ct derivation of the one-loop contribution to the shear viscosity and show that it is dominated by low-momentum plasmons. The weak-coupling behavior of the viscosity is strongly influenced by the momentum depen dence of the plasmon width.