De Sitter Space and Eternity

Details De Sitter Space and Eternity De Sitter Space and Eternity

2007-09-18

arxiv.org/abs/0709.2899v2

Nucl.Phys.B797:199-217,2008

Physics

High Energy Physics

High Energy Physics - Theory

27 pages important comments added. references added

Scientific paper

10.1016/j.nuclphysb.2008.01.002

This paper explores infrared quantum effects in the de Sitter space. The notion of "eternal manifolds" is introduced and it is shown that in most cases the de Sitter space doesn't belong to this class. It is unstable under small perturbations which may cause a breakdown of the de Sitter symmetry. The de Sitter string sigma model is discussed. It is argued that the gauge theory at the complex coupling is dual to the matrix elements of vertex operators in the de Sitter space, taken between the Bunch - Davies vacuum and the "out" state without particles.The described infrared effects are likely to screen away the cosmological constant.

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