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SUMMARY:Stringy Origins of Cosmic Structure: The D-brane vector curvaton -
  Wills\, D (University of Durham)
DTSTART:20120626T154500Z
DTEND:20120626T160000Z
UID:TALK38672@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:I will discuss how the U(1) vector fields that live on the wor
 ldvolumes of D-branes in Type IIB string theory may play the role of vecto
 r curvatons and hence give rise to distinctive features in the spectrum an
 d bispectrum of the curvature perturbation. I will first consider vector f
 ields on D3-branes in open-string inflation\, as a means of illustrating t
 he principle. I will then discuss a D7-brane vector curvaton scenario in c
 losed-string inflation. \n\n
LOCATION:Seminar Room 1\, Newton Institute
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