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          Institute: MPI für Gravitationsphysik     Collection: Quantum Gravity and Unified Theories     Display Documents



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ID: 2740.1, MPI für Gravitationsphysik / Quantum Gravity and Unified Theories
Lorentzian 3d gravity with wormholes via matrix models
Authors:Ambjörn, Jan; Jurkiewicz, Jerzy; Loll, Renate; Vernizzi, Graziano
Language:English
Date of Publication (YYYY-MM-DD):2001
Title of Journal:Journal of High Energy Physics
Volume:09
Start Page:022
Review Status:not specified
Audience:Not Specified
Abstract / Description:We uncover a surprising correspondence between a non-perturbative formulation of three-dimensional Lorentzian quantum gravity and a hermitian two-matrix model with ABAB-interaction. The gravitational transfer matrix can be expressed as the logarithm of a two-matrix integral, and we deduce from the known structure of the latter that the model has two phases. In the phase of weak gravity, well-defined two-dimensional universes propagate in proper time, whereas in the strong-coupling phase the spatial hypersurfaces disintegrate into many components connected by wormhole
External Publication Status:published
Document Type:Article
Communicated by:Hermann Nicolai
Affiliations:MPI für Gravitationsphysik/Quantum Gravity and Unified Theories
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