Loop Representations for 2+1 Gravity on a Torus

Details Loop Representations for 2+1 Gravity on a Torus Loop Representations for 2+1 Gravity on a Torus

1993-03-12

arxiv.org/abs/gr-qc/9303019v1

Class.Quant.Grav.10:2625-2648,1993

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

24 journal or 52 preprint pages, revtex, SU-GP-93/3-1

Scientific paper

10.1088/0264-9381/10/12/020

We study the loop representation of the quantum theory for 2+1 dimensional general relativity on a manifold, $M = {\cal T}^2 \times {\cal R}$, where ${\cal T}^2$ is the torus, and compare it with the connection representation for this system. In particular, we look at the loop transform in the part of the phase space where the holonomies are boosts and study its kernel. This kernel is dense in the connection representation and the transform is not continuous with respect to the natural topologies, even in its domain of definition. Nonetheless, loop representations isomorphic to the connection representation corresponding to this part of the phase space can still be constructed if due care is taken. We present this construction but note that certain ambiguities remain; in particular, functions of loops cannot be uniquely associated with functions of connections.

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