Physics & Astronomy Colloquium
3:30 PM, Friday, April 10, 2009
Room 155, Chem-Phys Building
Dr. Sandeep Trivedi
Recent progress in observational cosmology has revealed that the universe
is accelerating. A small and positive cosmological constant provides the
leading theoretical explanation for this acceleration.
We now understand that such a cosmological constant can arise in string
theory. The picture which emerges is that of a complicated landscape with
many- many vacuua, and widely varying values for the cosmological constant
and the other constants of nature.
What this landscape means for string theory and our quest for the
fundamental laws of nature is a matter of active discussion.
The colloquium will review these developments.
Tata Institute of Fundamental Research
Refreshments will be served in CP 177 at 3:15 PM