IPMU Colloquium

Speaker: Ruth Gregory (Durham)
Title: Dark energy or light gravity?
Date (JST): Wed, Apr 08, 2009, 15:30 - 17:00
Place: Media Hall, 1st floor of Kashiwa Library
Abstract: Supernova observations indicate that the universe is currently accelerating, but is this acceleration due to a cosmological constant or light scalar, or is it due to modifications to Einstein gravity?
Large extra dimension scenarios give a way of modifying gravity at ultra large scales, and I'll describe some general scenarios which give rise to late time acceleration, and discuss their physical