Thermal Operator Representation of Finite Temperature Graphs
High Energy Physics - Theory
2008-11-26 v1 High Energy Physics - Phenomenology
Abstract
Using the mixed space representation (t,p) in the context of scalar field theories, we prove in a simple manner that the Feynman graphs at finite temperature are related to the corresponding zero temperature diagrams through a simple thermal operator, both in the imaginary time as well as in the real time formalisms. This result is generalized to the case when there is a nontrivial chemical potential present. Several interesting properties of the thermal operator are also discussed.
Keywords
Cite
@article{arxiv.hep-th/0508067,
title = {Thermal Operator Representation of Finite Temperature Graphs},
author = {Fernando T. Brandt and Ashok Das and Olivier Espinosa and Josif Frenkel and Silvana Perez},
journal= {arXiv preprint arXiv:hep-th/0508067},
year = {2008}
}
Comments
20 pages, seven figures