Semiclassical Approaches to IR Issues in Quasi de Sitter Universes

Who: Martin S. Sloth (CERN)
When: Monday, December 13, 2010 at 14:15
Where: The CP³ meeting room


Abstract: Using simple semiclassical relations it is possible to show that the conventional cosmological correlation functions are affected by significant IR corrections in quasi de Sitter space-times when averaged over very large volumes (in the “large box”). The IR effects apparently imply a breakdown of perturbation theory in the large box on sufficiently long time scales, for example the time between self-reproduction and reheating in chaotic inflation. An interpretation of the apparent breakdown of the perturbative expansion of gravity will also be discussed.

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