Loop Quantum Cosmology on a Torus

Details Loop Quantum Cosmology on a Torus Loop Quantum Cosmology on a Torus

2009-09-14

arxiv.org/abs/0909.2578v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

35 pages, 7 figures

Scientific paper

In this paper we study the effect of a torus topology on Loop Quantum Cosmology. We first derive the Teichmueller space parametrizing all possible tori using Thurston's theorem and construct a Hamiltonian describing the dynamics of these torus universes. We then compute the Ashtekar variables for a slightly simplified torus such that the Gauss constraint can be solved easily. We perform a canonical transformation so that the holomies along the edges of the torus reduce to a product between almost and strictly periodic functions of the new variables. The drawback of this transformation is that the components of the densitized triad become complicated functions of these variables. Nevertheless we find two ways of quantizing these components, which in both cases leads surprisingly to a continuous spectrum.

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