Validating the 2PI resummation: the Bloch-Nordsieck example
High Energy Physics - Theory
2015-04-21 v1 High Energy Physics - Phenomenology
Abstract
In this work we provide a numerical method to obtain the Bloch-Nordsieck spectral function at finite temperature in the framework of the 2PI approximation. We find that the 2PI results nicely agree with the exact one, provided we perform a coupling constant matching. In the paper we present the resulting finite temperature running of the 2PI coupling constant. This result may apply for the finite temperature behavior of the coupling constant in QED, too.
Keywords
Cite
@article{arxiv.1405.6576,
title = {Validating the 2PI resummation: the Bloch-Nordsieck example},
author = {A. Jakovac and P. Mati},
journal= {arXiv preprint arXiv:1405.6576},
year = {2015}
}
Comments
14 pages, 14 figures, uses revtex4-1