Colloquium
Dept of Physics & Astronomy
Matthew Kleban
Assistant Professor of Physics
When Worlds
Collide
The greatest
challenge facing string theory is the search for testable predictions. Surprisingly, one of the most promising
opportunities arises from observations of the largest structures in the
universe. I will present a broad
overview of the aspects of string theory relevant to cosmology, specifically
the string theory "landscape" and the solution it provides for the
cosmological constant problem, and describe some recent progress in the search
for observable signatures of string theory in the cosmic microwave