Finite temperature correlation functions from form factors
High Energy Physics - Theory
2015-06-26 v2 Condensed Matter
Abstract
We investigate proposals of how the form factor approach to compute correlation functions at zero temperature can be extended to finite temperature. For the two-point correlation function we conclude that the suggestion to use the usual form factor expansion with the modification of introducing dressing functions of various kinds is only suitable for free theories. Dynamically interacting theories require a more severe change of the form factor program.
Cite
@article{arxiv.hep-th/0203130,
title = {Finite temperature correlation functions from form factors},
author = {O. A. Castro-Alvaredo and A. Fring},
journal= {arXiv preprint arXiv:hep-th/0203130},
year = {2015}
}
Comments
22 pages Latex, 3 figures