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Nonperturbative sum over topologies in 2D Lorentzian quantum gravity

Abstract:

The recent progress in the Causal Dynamical Triangulations (CDT) approach to quantum gravity indicates that gravitation is nonperturbatively renormalizable. We review some of the latest results in 1+1 and 3+1 dimensions with special emphasis on the 1+1 model. In particular we discuss a nonperturbative implementation of the sum over topologies in the gravitational path integral in 1+1 dimensions. The dynamics of this model shows that the presence of infinitesimal wormholes leads to a decrease ...

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Publisher copy:
10.1063/1.2399601

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
Role:
Author
Volume:
861
Pages:
391-397
Publication date:
2006-03-09
DOI:
EISSN:
1551-7616
ISSN:
0094-243X
URN:
uuid:5a88ad1a-b982-44c3-b4ae-0489d17f8fba
Source identifiers:
161712
Local pid:
pubs:161712
ISBN:
9780735403598
Keywords:

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