Novel collective excitations in a hot scalar field theory
High Energy Physics - Phenomenology
2014-04-03 v2 High Energy Physics - Theory
Abstract
We study the spectrum of quasiparticles in a scalar quantum field theory at high temperature. Our results indicate the existence of novel quasiparticles with purely collective origin at low momenta for some choices of the masses and coupling. Scalar fields play a prominent role in many models of cosmology, and their collective excitations could be relevant for transport phenomena in the early universe.
Keywords
Cite
@article{arxiv.1311.6641,
title = {Novel collective excitations in a hot scalar field theory},
author = {Marco Drewes},
journal= {arXiv preprint arXiv:1311.6641},
year = {2014}
}
Comments
In v1 there was an error in the self-energy, which is now corrected. This lead to some changes in the plots, but the basic results and conclusions remain unaffected