Topology change in causal quantum gravity
High Energy Physics - Theory
2008-02-08 v1
Abstract
The role of topology change in a fundamental theory of quantum gravity is still a matter of debate. However, when regarding string theory as two-dimensional quantum gravity, topological fluctuations are essential. Here we present a third quantization of two-dimensional surfaces based on the method of causal dynamical triangulation (CDT). Formally, our construction is similar to the c = 0 non-critical string field theory developed by Ishibashi, Kawai and others, but physically it is quite distinct. Unlike in non-critical string theory the topology change of spatial slices is well controlled and regulated by Newton's constant.
Cite
@article{arxiv.0802.0896,
title = {Topology change in causal quantum gravity},
author = {J. Ambjorn and R. Loll and Y. Watabiki and W. Westra and S. Zohren},
journal= {arXiv preprint arXiv:0802.0896},
year = {2008}
}
Comments
4 pages, proceedings of the workshop JGRG 17 (Nagoya, Japan, December 2007)