2002/03/31 by Gert Aarts, Jose Maria Martinez Resco · 1 citation
Physics and Astronomy · #hep-ph #hep-lat #hep-th #nucl-th
paper · pdf · doi:10.1088/1126-6708/2002/04/053
published as JHEP0204:053,2002 · 25 pages with 7 eps figures, discussion improved, acknowledgement added; to appear in JHEP
arxiv created 2002/04/29 · arxiv updated 2009/11/30
Transport coefficients are determined by the slope of spectral functions of composite operators at zero frequency. We study the spectral function relevant for the shear viscosity for arbitrary frequencies in weakly-coupled scalar and nonabelian gauge theories at high temperature and compute the corresponding correlator in euclidean time. We discuss whether nonperturbative values of transport coefficients can be extracted from euclidean lattice simulations.