| 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. |
