Speaker: | Prof. Abhay Ashtekar |
Title: |
Quantum Geometry and Space-time 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 space-time 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}
space-time does not end at singularities. Quantum geometry can
serve as a bridge between vast space-time regions which are
classically unrelated. Thus, contrary to one's initial intuition,
ramifications of quantum geometry can reach far beyond the Planck
regime.
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Talk: |
Transparencies, Recorded Talk
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