Comments on the vacuum energy decay
High Energy Physics - Theory
2015-05-18 v4
Abstract
The {\em instability of vacuum energy} in de Sitter space as discussed recently by Polyakov is argued to be a generic feature when external gravitational fields are present. It is related to the existence of {\em forbidden} (by momentum conservation) decays derived in some detail by Bros, Epstein and Moschella. Some calculations are discussed in a conformally invariant setting, and a flat space model is presented.
Cite
@article{arxiv.1004.4867,
title = {Comments on the vacuum energy decay},
author = {Enrique Álvarez and Roberto Vidal},
journal= {arXiv preprint arXiv:1004.4867},
year = {2015}
}
Comments
25 pages, 1 figures; significant changes; added content from another preprint