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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Galilean Genesis: an alternative to inflation
Speaker(s): Paolo Creminelli
Abstract: I will discuss an alternative to inflation based on a Galileon field. The model starts in a (contracting or expanding) quasi Minkowski phase and all the energy of the Universe in generated suddenly in a sort of Genesis associated with a strong violation of the Null Energy Condition. The symmetries of the model force any additional scalar field to acquire a scale invariant spectrum of perturbations.
Date: 29/04/2010 - 2:45 pm
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