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SUMMARY:Hybrid inflation along waterfall trajectories - Sébastien Clesse 
 (University of Cambridge)
DTSTART:20111014T120000Z
DTEND:20111014T130000Z
UID:TALK33479@talks.cam.ac.uk
CONTACT:Ian A. Morrison
DESCRIPTION:An inflationary regime for which more than 60 e-folds are gene
 rated classically during the waterfall phase occuring after the usual hybr
 id inflation has been identified. By performing a bayesian Monte-Carlo-Mar
 kov-Chain analysis\, this scenario is shown to take place in a large part 
 of the parameter space of the model. When this occurs\, the observable per
 turbation modes leave the Hubble radius during waterfall inflation. The po
 wer spectrum of adiabatic perturbations is red\, possibly in agreement wit
 h CMB constraints. A particular attention has been given to study only the
  regions for which quantum backreactions do not affect the classical dynam
 ics. Implications concerning the preheating and the absence of topological
  defects in our universe will be discussed.
LOCATION:Pavilion B Potter Room (B1.19)
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