INVESTIGADORES
FIORINI Franco Luis
artículos
Título:
Born-Infeld determinantal gravity and the taming of the conical singularity in 3-dimensional spacetime
Autor/es:
RAFAEL FERRARO AND FRANCO FIORINI
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2010 vol. 692 p. 206 - 2010
ISSN:
0370-2693
Resumen:
In the context of Born-Infeld emph{determinantal} gravity
formulated in a n-dimensional spacetime with absolute parallelism,
we found an exact 3-dimensional emph{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.