期刊
PHYSICS LETTERS B
卷 692, 期 3, 页码 206-211出版社
ELSEVIER
DOI: 10.1016/j.physletb.2010.07.040
关键词
Born-Infeld; Singularities; 3-dimensional gravity
资金
- CONICET
- Universidad de Buenos Aires
In the context of Born-Infeld determinantal gravity formulated in an n-dimensional spacetime with absolute parallelism, we found an exact 3-dimensional vacuum circular symmetric solution without cosmological constant consisting in a rotating spacetime with non-singular behavior. The space behaves at infinity as the conical geometry typical of 3-dimensional General Relativity without cosmological constant. However, the solution has no conical singularity because the space ends at a minimal circle that no freely falling particle can ever reach in a finite proper time. The space is curved, but no divergences happen since the curvature invariants vanish at both asymptotic limits. Remarkably, this very mechanism also forbids the existence of closed timelike curves in such a spacetime. (C) 2010 Elsevier B.V. All rights reserved.
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