Particle decay in false vacuum
High Energy Physics - Theory
2008-11-26 v1
Abstract
We revisit the problem of decay of a metastable vacuum induced by the presence of a particle. For the bosons of the `master field' the problem is solved in any number of dimensions in terms of the spontaneous decay rate of the false vacuum, while for a fermion we find a closed expression for the decay rate in (1+1) dimensions. It is shown that in the (1+1) dimensional case an infrared problem of one-loop correction to the decay rate of a boson is resolved due to a cancellation between soft modes of the field. We also find the boson decay rate in the `sine-Gordon staircase' model in the limits of strong and weak coupling.
Cite
@article{arxiv.hep-th/0511095,
title = {Particle decay in false vacuum},
author = {A. Gorsky and M. B. Voloshin},
journal= {arXiv preprint arXiv:hep-th/0511095},
year = {2008}
}
Comments
19 pages, 2 figures