Cosmic Acceleration and M-Theory
Abstract
Description
The status of accelerating four-dimensional universes obtained by time-dependent compactifications of 10 or 11 dimensional supergravity is reviewed, as is the `no-go' theorem that they evade. All flat cosmologies for a simple exponential potential are found explicitly. It is noted that transient acceleration is generic, and unavoidable for `flux' compactifications. Included is an eternally accelerating flat cosmology without a future event horizon.
10 pp. Latex. Minor corrections made and Ref. added. To appear in proceedings of ICMP2003, Lisbon, Portugal, July 2003
10 pp. Latex. Minor corrections made and Ref. added. To appear in proceedings of ICMP2003, Lisbon, Portugal, July 2003