Oxidised cosmic acceleration

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• Daniel Wesley (DAMTP, University of Cambridge)
• Friday 20 June 2008, 13:00-14:00
• Pavilion B Potter Room (B1.19).

If you have a question about this talk, please contact David Seery.

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 that the null energy condition must be violated to achieve nearly de Sitter expansion. 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.

This talk is part of the DAMTP Friday GR Seminar series.

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