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Regge calculus in teleparallel gravity

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Published 6 September 2002 Published under licence by IOP Publishing Ltd
, , Citation J G Pereira and T Vargas 2002 Class. Quantum Grav. 19 4807 DOI 10.1088/0264-9381/19/19/301

0264-9381/19/19/4807

Abstract

In the context of the teleparallel equivalent of general relativity, the Weitzenböck manifold is considered as the limit of a suitable sequence of discrete lattices composed of an increasing number of smaller and smaller simplices, where the interior of each simplex (Delaunay lattice) is assumed to be flat. The link lengths l between any pair of vertices serve as independent variables, so that torsion turns out to be localized in the two-dimensional hypersurfaces (dislocation triangle, or hinge) of the lattice. Assuming that a vector undergoes a dislocation in relation to its initial position as it is parallel transported along the perimeter of the dual lattice (Voronoi polygon), we obtain the discrete analogue of the teleparallel action, as well as the corresponding simplicial vacuum field equations.

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10.1088/0264-9381/19/19/301