Talk Details

Monday, October 27, 2014 - 11:00am

Gerasimos Rigopopulos (ITP):

"On the effective field theory for cosmological clustering"

Abstract. I will discuss an effective field theory for cosmological large scale structure where an effective gravitational viscosity damps the initial power and a stochastic force accounts for power generated from very short, highly non-linear scales that is uncorrelated with the initial power spectrum. The theory should arise in the context of standard CDM but with a coarse graining introduced and, contrary to standard perturbation theory, is renormalizable.