Transport coefficients, spectral functions and the lattice | Zendy

Gert Aarts | Zendy; Jose M. Martínez Resco | Zendy

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Transport coefficients, spectral functions and the lattice

Author(s) -

Gert Aarts,

Jose M. Martínez Resco

Publication year - 2002

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2002/04/053

Subject(s) - euclidean geometry , lattice (music) , scalar (mathematics) , spectral function , physics , statistical physics , euclidean distance , mathematical analysis , mathematics , mathematical physics , condensed matter physics , geometry , acoustics

Transport coefficients are determined by the slope of spectral functions ofcomposite operators at zero frequency. We study the spectral function relevantfor the shear viscosity for arbitrary frequencies in weakly-coupled scalar andnonabelian gauge theories at high temperature and compute the correspondingcorrelator in euclidean time. We discuss whether nonperturbative values oftransport coefficients can be extracted from euclidean lattice simulations.Comment: 25 pages with 7 eps figures, discussion improved, acknowledgement added; to appear in JHE

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