Dynamical resummation and damping in the O(N) model
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
A general real-time formalism is developed to resum the self-energy operator of broken symmetry scalar field theories in form of self-consistent gap equations for the spectral function. The solution of the equations is approximated with finite lifetime quasi-particles. In the Landau damping rates viscosity terms, analogous to gauge theories, appear, what leads to a finite damping rate for the long wavelength Goldstone modes.
Cite
@article{arxiv.hep-ph/9911374,
title = {Dynamical resummation and damping in the O(N) model},
author = {A. Jakovac},
journal= {arXiv preprint arXiv:hep-ph/9911374},
year = {2007}
}
Comments
17 pages, 2 eps figures