Bonn 2010 – scientific programme

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GR: Fachverband Gravitation und Relativitätstheorie

GR 9: Kosmologie 1

GR 9.2: Talk

Tuesday, March 16, 2010, 17:45–18:05, JUR K

Stochastic Inflation and Replica Field Theory — •Florian Kühnel — Bielefeld University

In this talk, I discuss the application of replica field theory to stochastic inflation. After a review of the latter and a basic introduction to the former, I present recent results for the power spectrum. This is done for a minimally-coupled test field in de Sitter space-time. I will comment on the choice of filter functions and discuss the infra-red suppression of the power spectrum as an outcome of this new approach. In particular, I will show how this damping might explain the observed lack of large-angle correlation on the non-Galactic microwave sky.