The Fate of the Alpha-Vacuum

Details The Fate of the Alpha-Vacuum The Fate of the Alpha-Vacuum

2003-06-03

arxiv.org/abs/hep-th/0306028v2

Phys.Rev. D68 (2003) 124012

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, 6 figures, uses ReVTeX, minor corrections to the time evolution

Scientific paper

10.1103/PhysRevD.68.124012

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.

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