Equilibrium and Non-Equilibrium Hard Thermal Loop Resummation in the Real Time Formalism
High Energy Physics - Phenomenology
2011-09-13 v2 High Energy Physics - Theory
Nuclear Theory
Abstract
We investigate the use of the hard thermal loop (HTL) resummation technique in non-equilibrium field theory. We use the Keldysh representation of the real time formalism (RTF). We derive the HTL photon self energy and the resummed photon propagator. We show that no pinch singularities appear in the non-equilibrium HTL effective propagator. We discuss a possible regularization mechanism for these singularities at higher orders. As an example of the application of the HTL resummation method within the RTF we discuss the damping rate of a hard electron.
Keywords
Cite
@article{arxiv.hep-ph/9708363,
title = {Equilibrium and Non-Equilibrium Hard Thermal Loop Resummation in the Real Time Formalism},
author = {Magaret E. Carrington and Hou Defu and Markus H. Thoma},
journal= {arXiv preprint arXiv:hep-ph/9708363},
year = {2011}
}
Comments
23 pages, REVTEX, 5 PostScript figures, revised version to be published in Eur. Phys. J. C