|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|
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