Topology change in causal quantum gravity

Details Topology change in causal quantum gravity Topology change in causal quantum gravity

2008-02-06

arxiv.org/abs/0802.0896v1

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, proceedings of the workshop JGRG 17 (Nagoya, Japan, December 2007)

Scientific paper

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.

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