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SUMMARY:Observing String Inflation - Hiranya Peiris (IoA)
DTSTART:20071119T130000Z
DTEND:20071119T140000Z
UID:TALK8156@talks.cam.ac.uk
CONTACT:Antony Lewis
DESCRIPTION:I will review the recent progress in realizing the inflationar
 y paradigm in string theory\, focusing on D-brane inflation models in whic
 h\, in contrast to standard single field slow-roll inflation\, fluctuation
 s in the inflaton field can propagate at a speed significantly smaller tha
 n the speed of light. This yields distinctive observable effects\, with st
 rong implications for the amplitude of the gravitational wave background\,
  non-Gaussianity of primordial perturbations\, and the shape of the primor
 dial power spectrum of scalar perturbations. I will show how a combination
  of microphysical and observational constraints (even with\ncurrent data) 
 strongly limits these models\, and hence the underlying string theory fram
 ework.
LOCATION:CMS\, Pav.B\, First Floor Common Room (B1.19)
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