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Institute for the Physics and Mathematics of the UniverseWPI

Cosmology from spinning branes

Date: March 14, 2008, from 15:30
Place: Room 633, 6th floor, Research Centers Building, Kashiwa Campus of the University of Tokyo.
Speaker: Damien A. Easson (Durham University)
Title: Cosmology from spinning branes
Abstract: After a brief introduction to the inflationary Universe paradigm and flux compactifications in string theory I will discuss the cosmological implications of moving, spinning brane matter sources. The cosmology constructed by observers living on the spinning brane and observers living elsewhere in the spacetime drastically differ. The brane observer can experience cosmological bounces and cyclic behavior of the scale factor induced by centrifugal angular momentum barriers. Observers living elsewhere in the compactification experience marginally prolonged periods of inflation due to large angular momentum, introducing the notion of spinflation. The presence of spinflaton fields during inflation may lead to interesting observational signatures in the cosmic microwave background radiation.