7-11 September 2015
Warsaw, Poland
Europe/Zurich timezone

Corpuscular Considerations on Cosmological Observables and Eternal Inflation

10 Sep 2015, 14:00
20m
Rm 111+112 ()

Rm 111+112

Speaker

Florian Kuhnel (The Oskar Klein Centre, Sweden)

Description

In my talk, I will first introduce the corpuscular framework, recently proposed by Gia Dvali and Cesar Gomez, in which space-time is described in terms of graviton Bose-Einstein condensates. Then I will present our recent quantitative investigations on this model regarding its cosmological implications, and will show how the cosmic microwave background power spectrum and the tensor-to-scalar ratio are affected. The last part of my talk reviews the paradigm of eternal inflation in the light of the corpuscular picture of space-time. Incorporating the inflaton fluctuations including quantum depletion (which is intrinsic to the graviton Bose-Einstein condensate description), I will show that the fraction of the space-time which has an increasing potential is always below the eternal-inflation threshold. This proves that for monomial potentials eternal inflaton is excluded. This is likely to hold for other inflation models as well.

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×