Prof. Sean Carroll, University of Chicago
Modified Gravity and the Accelerating Universe
May 5, 2006

The universe is accelerating, and we don't know why.  The most popular
explanation invokes a smoothly distributed component of dark energy,
but a modification of general relativity at low curvatures remains a
viable alternative.  I will explore both models of modified gravity
and their observational consequences, examining both braneworld models
and purely four-dimensional theories.text in that file's own buffer.