Sat. April 6, 1:30 p.m. – 1:42 p.m. PDT
Ballroom A7, Floor 2
We understand reasonably well how to construct a discrete causal set that approximates a given spacetime manifold. The vast majority of causal sets, though, are not at all continuum-like, and if we take the discrete description to be fundamental, we must somehow suppress these "bad" sets. I will discuss some recent progress in showing that a very large class of non-manifoldlike sets is extremely strongly suppressed in the ordinary gravitational path integral, perhaps allowing us to recover the observed continuum structure of spacetime from the quantum theory of discrete structures.
Presented By
- Steven J Carlip (University of California, Davis)
From discrete causal sets to a spacetime continuum
Sat. April 6, 1:30 p.m. – 1:42 p.m. PDT
Ballroom A7, Floor 2
We understand reasonably well how to construct a discrete causal set that approximates a given spacetime manifold. The vast majority of causal sets, though, are not at all continuum-like, and if we take the discrete description to be fundamental, we must somehow suppress these "bad" sets. I will discuss some recent progress in showing that a very large class of non-manifoldlike sets is extremely strongly suppressed in the ordinary gravitational path integral, perhaps allowing us to recover the observed continuum structure of spacetime from the quantum theory of discrete structures.
Presented By
- Steven J Carlip (University of California, Davis)