- #1

tom.stoer

Science Advisor

- 5,766

- 161

## Main Question or Discussion Point

Interesting paper:

http://arxiv.org/abs/1009.1136v1

Steven Carlip

(Submitted on 6 Sep 2010)

Abstract: Several lines of evidence hint that quantum gravity at very small distances may be effectively two-dimensional. I summarize the evidence for such ``spontaneous dimensional reduction,'' and suggest an additional argument coming from the strong-coupling limit of the Wheeler-DeWitt equation. If this description proves to be correct, it suggests a fascinating relationship between small-scale quantum spacetime and the behavior of cosmologies near an asymptotically silent singularity.

http://arxiv.org/abs/1009.1136v1

**The Small Scale Structure of Spacetime**Steven Carlip

(Submitted on 6 Sep 2010)

Abstract: Several lines of evidence hint that quantum gravity at very small distances may be effectively two-dimensional. I summarize the evidence for such ``spontaneous dimensional reduction,'' and suggest an additional argument coming from the strong-coupling limit of the Wheeler-DeWitt equation. If this description proves to be correct, it suggests a fascinating relationship between small-scale quantum spacetime and the behavior of cosmologies near an asymptotically silent singularity.