 Speaker:  Prof. Abhay Ashtekar 
Title: 
Quantum Geometry and Spacetime Singularities 
Abstract: 
General relativity provides a subtle and powerful interplay
between gravity and geometry, thereby opening numerous
possibilities for novel phenomena. However, this interplay also
implies that the spacetime itself ends when the gravitational
field becomes singular. In loop quantum gravity, the interplay is
elevated to the quantum regime through quantum geometry. I will
present examples which strongly suggest that the {\it physical}
spacetime does not end at singularities. Quantum geometry can
serve as a bridge between vast spacetime regions which are
classically unrelated. Thus, contrary to one's initial intuition,
ramifications of quantum geometry can reach far beyond the Planck
regime.

Talk: 
Transparencies, Recorded Talk

 