Theoretical High Energy Seminar


Martin Sloth (CERN)


Semiclassical relations and IR effects in de Sitter and slow-roll space-times


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

Details

Date: Thursday, 9/12/10

Time: 14:15

Place: Auditorium A, Blegdamsvej 17, 2100, Copenhagen