A Generalized Fluctuation-Dissipation Theorem for Nonlinear Response Functions
High Energy Physics - Theory
2009-10-09 v1 High Energy Physics - Phenomenology
Abstract
A nonlinear generalization of the Fluctuation-Dissipation Theorem (FDT) for the n-point Green functions and the amputated 1PI vertex functions at finite temperature is derived in the framework of the Closed Time Path formalism. We verify that this generalized FDT coincides with known results for n=2 and 3. New explicit relations among the 4-point nonlinear response and correlation (fluctuation) functions are presented.
Cite
@article{arxiv.hep-th/9809016,
title = {A Generalized Fluctuation-Dissipation Theorem for Nonlinear Response Functions},
author = {Enke Wang and Ulrich Heinz},
journal= {arXiv preprint arXiv:hep-th/9809016},
year = {2009}
}
Comments
34 pages, Revtex