Can there be a discrete theory of gravity?
When: April 25, 2008 (Fri), 03:30PM to 04:30PM
Location: PRB 595
Note: Special Particle Theory Seminar
Speaker: Prof. Gerard 't Hooft, University of Utrecht
Abstract:
Elementary particles are surrounded by gravitational fields that vary
continuously from point to point, and for that reason it is difficult to use
them as elementary constituents in a discretized theory. If matter is
assumed to consist of straight sections of strings this problem does not
arise. At first sight, the spectrum of strings, straight or otherwise, would
still allow for a continuum of orientations and velocities, but this can
perhaps be cured. An interesting discrete theory of gravity emerges that
sheds an unusual light on the quantum nature of our world.
This talk is about work still in progress.