Topology change in causal quantum gravity
| Autor: | Jan Ambjorn, Loll, R., Watabiki, Y., Westra, W., Zohren, S. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | University of Copenhagen |
| Popis: | 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. Comment: 4 pages, proceedings of the workshop JGRG 17 (Nagoya, Japan, December 2007) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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