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Centro de Astrofísica da Universidade do Porto
22-26 August 2011, Porto, Portugal

 

Non-Gaussianities from failed trapping events during inflation
Battefeld, Diana (University of Goettingen)

A close encounter with an Extra Species Point during multi-field inflation can provide the dominant contribution to the power-spectrum. I compute the accompanying non-Gaussianities based on the delta-N formalism. The primary, potentially observable contribution originates from a temporary decrease in speed due to back-reaction of produced particles.