Regge calculus in teleparallel gravity

被引:4
|
作者
Pereira, JG [1 ]
Vargas, T [1 ]
机构
[1] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil
关键词
D O I
10.1088/0264-9381/19/19/301
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the context of the teleparallel equivalent of general relativity, the Weitzenbock 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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页码:4807 / 4815
页数:9
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