PIRSA:08060133  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Constraining the inflationary action with cosmological observations
Speaker(s): Ghazal Geshnizjani
Abstract: If inflation is to be considered in an unbiased way, as possibly originating from one of a wide range of underlying theories,then observations need not be simply applied to reconstructing the inflaton potential, V(phi), or a specific kinetic term, as in DBI inflation, but rather to reconstruct the inflationary action in its entirety. I will discuss the constraints that can be placed on a generalsingle field action from measurements of the primordial scalar and tensor fluctuation power spectra and non-Gaussianities. I will also briefly present the flow equation formalism for reconstructing a general inflationary Lagrangian, in a general gauge, that reduces to canonical and DBI inflation in a specific gauge.
Date: 03/06/2008 - 3:00 pm
Collection: PASCOS 08
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