Making the gravitational path integral more Lorentzian, or life beyond 
Liouville gravity.

Loll, Renate; Ambjörn, Jan; Anagnostopoulos, K. N.

doi:10.1016/S0920-5632(00)00776-3

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Making the gravitational path integral more Lorentzian, or life beyond Liouville gravity.

MPS-Authors

Loll, Renate
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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9910232v1.pdf
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Nuclear-Physics-B---Proceedings-Supplements_88_1-3.pdf
(Publisher version), 398KB

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Citation

Loll, R., Ambjörn, J., & Anagnostopoulos, K. N. (2000). Making the gravitational path integral more Lorentzian, or life beyond Liouville gravity. Nuclear Physics B - Proceedings Supplements, 88(1-3), 241-244. doi:10.1016/S0920-5632(00)00776-3.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-571C-5

Abstract

In two space-time dimensions, there is a theory of Lorentzian quantum gravity which can be defined by a rigorous, non-perturbative path integral and is inequivalent to the well-known theory of (Euclidean) quantum Liouville gravity. It has a number of appealing features: i) its quantum geometry is non-fractal, ii) it remains consistent when coupled to matter, even beyond the C=1 barrier, iii) it is closer to canonical quantization approaches than previous path-integral formulations, and iv) its construction generalizes to higher dimensions.