Dr. Gregory Gabadadze
Title: Large Distance Gravity and
Cosmological Constant
Abstract: Perhaps, one of the
least understood problems of particle physics, cosmology and gravitation is that
of the Cosmological Constant. The problem stems from a huge mismatch between
observational data and theoretical expectations. It is possible that a
resolution of this problem will require dramatic changes in our views of
space-time and gravity at very large distances. I will
discuss an approach to this problem in theories of large distance modification
of laws of gravity. These theories can describe the accelerated expansion of
the Universe, produce testable predictions, and successfully account for the
past cosmological evolution. I will outline future prospects for
theoretical work in this direction.