A remark on alpha vacua for quantum field theories on de Sitter space
High Energy Physics - Theory
2009-11-11 v1
Abstract
It is shown that the so-called -vacua which have been proposed as candidates for states of free quantum fields on de Sitter space have infinitely strong fluctuations for typical observables as averaged renormalized energy momentum tensor.
Keywords
Cite
@article{arxiv.hep-th/0503022,
title = {A remark on alpha vacua for quantum field theories on de Sitter space},
author = {Romeo Brunetti and Klaus Fredenhagen and Stefan Hollands},
journal= {arXiv preprint arXiv:hep-th/0503022},
year = {2009}
}