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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Density Perturbations from Curvatons Revisited
Speaker(s): Takeshi Kobayashi
Abstract: The curvaton scenario provides a simple explanation for the generation of the cosmological perturbations, however most works have focused on cases with rather trivial curvaton energy potentials, e.g. quadratic ones. In this talk I will present the rich phenomenology of curvatons by showing that non-quadratic curvatons exhibit new behaviors, leading to interesting signals in the resulting density perturbations. A string theory realization of the curvaton scenario will also be discussed, where D-branes located in a warped throat region of the internal space play the role of curvatons.
Date: 24/04/2012 - 11:00 am
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