Two-Loop Self-Energy and Multiple Scattering at Finite Temperature
High Energy Physics - Theory
2016-09-06 v2
Abstract
One and two loop self-energies are worked out explicitly for a heavy scalar field interacting weakly with a light self-interacting scalar field at finite temperature. The ring/daisy diagrams and a set of necklace diagrams can be summed simultaneously. This simple model serves to illustrate the connection between multi-loop self-energy diagrams and multiple scattering in a medium.
Cite
@article{arxiv.hep-th/0103065,
title = {Two-Loop Self-Energy and Multiple Scattering at Finite Temperature},
author = {J. I. Kapusta and S. M. H. Wong},
journal= {arXiv preprint arXiv:hep-th/0103065},
year = {2016}
}
Comments
15 pages including 7 figures; v2. with appendix added, accepted by PRD