Form factor expansion for thermal correlators
High Energy Physics - Theory
2011-03-28 v3 Statistical Mechanics
Abstract
We consider finite temperature correlation functions in massive integrable Quantum Field Theory. Using a regularization by putting the system in finite volume, we develop a novel approach (based on multi-dimensional residues) to the form factor expansion for thermal correlators. The first few terms are obtained explicitly in theories with diagonal scattering. We also discuss the validity of the LeClair-Mussardo proposal.
Cite
@article{arxiv.1008.3810,
title = {Form factor expansion for thermal correlators},
author = {B. Pozsgay and G. Takacs},
journal= {arXiv preprint arXiv:1008.3810},
year = {2011}
}
Comments
41 pages; v2: minor corrections, v3: minor corrections