On the consistency of de Sitter vacua

Details On the consistency of de Sitter vacua On the consistency of de Sitter vacua

2002-10-07

arxiv.org/abs/hep-th/0210058v2

JHEP 0212 (2002) 025

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, v2: minor clarifications and corrections to references

Scientific paper

10.1088/1126-6708/2002/12/025

In this paper the consistency of the de Sitter invariant $\alpha $-vacua, which have been introduced as simple tools to study the effects of transplanckian physics, is investigated. In particular possible non renormalization problems are discussed, as well as non standard properties of Greens functions. We also discuss the non thermal properties of the $\alpha $-vacua and the necessity of $\alpha$ to change. The conclusion is that non of these problems necessarily exclude an application of the $\alpha $-vacua to inflation.

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