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SUMMARY:Oxidised cosmic acceleration - Daniel Wesley (DAMTP\, University o
 f Cambridge)
DTSTART:20080620T120000Z
DTEND:20080620T130000Z
UID:TALK11087@talks.cam.ac.uk
CONTACT:David Seery
DESCRIPTION:I will describe new results concerning embedding accelerating 
 cosmological epochs (inflationary or dark energy-dominated) in models with
  extra dimensions.  With weak assumptions on the higher-dimensional theory
 \, one can reverse-engineer its properties based on simple features of the
  four-dimensional cosmology.  In a large family of models one can show tha
 t the null energy condition must be violated to achieve nearly de Sitter e
 xpansion. I will discuss the relation of these results to existing "no-go"
  theorems. I will also describe work in progress concerning observational 
 connections\, and some open problems.
LOCATION:Pavilion B Potter Room (B1.19)
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