The Fate of the Alpha-Vacuum
High Energy Physics - Theory
2009-11-10 v2 High Energy Physics - Phenomenology
Abstract
de Sitter space-time has a one complex parameter family of invariant vacua for the theory of a free, massive scalar field. For most of these vacua, in an interacting scalar theory the one loop corrections diverge linearly for large values of the loop momentum. These divergences are not of a form that can be removed by a de Sitter invariant counterterm, except in the case of the Euclidean, or Bunch-Davies, vacuum.
Cite
@article{arxiv.hep-th/0306028,
title = {The Fate of the Alpha-Vacuum},
author = {Hael Collins and R. Holman and Matthew R. Martin},
journal= {arXiv preprint arXiv:hep-th/0306028},
year = {2009}
}
Comments
15 pages, 6 figures, uses ReVTeX, minor corrections to the time evolution