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PIRSA:08060180

Non-Gaussianities from modified initial states

APA

(2008). Non-Gaussianities from modified initial states. Perimeter Institute for Theoretical Physics. https://pirsa.org/08060180

Talk numberPIRSA:08060180
Source RepositoryPIRSA
Collection

Abstract

We consider the most general treatment of primordial non-Gaussianities, arising from modifying the initial state. Besides considering non-Gaussian effects due to subhorizon particle production, we parameterize the initial non-Gaussian features in terms of a Boundary Effective Field Theory (BEFT). Both effects contribute to the final result for the bispectrum, and we use this to put constraints on the initial state.