Unitary equivalence of the metric and holonomy formulations of (2+1)-dimensional quantum gravity on the torus

Arlen Anderson
Phys. Rev. D 47, 4458 – Published 15 May 1993
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Abstract

Recent work on canonical transformations in quantum mechanics is applied to transform between the Moncrief metric formulation and the Witten-Carlip holonomy formulation of (2+1)-dimensional quantum gravity on the torus. A nonpolynomial factor ordering of the classical canonical transformation between the metric and holonomy variables is constructed which preserves their classical modular transformation properties. An extension of the definition of a unitary transformation is briefly discussed and is used to find the inner product in the holonomy variables which makes the canonical transformation unitary. This defines the Hilbert space in the Witten-Carlip formulation which is unitarily equivalent to the natural Hilbert space in the Moncrief formulation. In addition, gravitational θ states arising from "large" diffeomorphisms are found in the theory.

  • Received 13 October 1992

DOI:https://doi.org/10.1103/PhysRevD.47.4458

©1993 American Physical Society

Authors & Affiliations

Arlen Anderson*,†

  • Department of Physics, McGill University, Ernest Rutherford Building, Montréal, Quebec, Canada H3A 2T8 and Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, England

  • *Electronic address: arley@ic.ac.uk
  • Present address.

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Vol. 47, Iss. 10 — 15 May 1993

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