Phys. Rev. D 50, 4982–4992 (1994)Canonical quantization of (2+1)-dimensional gravityReceived 6 August 1993; published in the issue dated 15 October 1994 We consider the quantum dynamics of both open and closed two-dimensional universes with ‘‘wormholes’’ and particles. The wave function is given as a sum of freely propagating amplitudes, emitted from a network of mapping class images of the initial state. Interference between these amplitudes gives nontrivial scattering effects, formally analogous to the optical diffraction by a multidimensional grating; ‘‘bright lines’’ correspond to the most probable geometries. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.50.4982
DOI:
10.1103/PhysRevD.50.4982
PACS:
04.60.Kz, 02.20.Nq, 04.20.Fy, 04.50.+h
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