INVESTIGADORES
FIORINI Franco Luis
artículos
Título:
Non Singular Promises from Born-Infeld Gravity
Autor/es:
FRANCO FIORINI
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2013 vol. 111 p. 41104 - 41108
ISSN:
0031-9007
Resumen:
Born-Infeld determinantal gravity formulated in Weitzenbock spacetime is discussed in the context of Friedmann-Robertson-Walker (FRW) cosmologies. It is shown how the standard model big bang
singularity is absent in certain spatially flat FRW spacetimes, where the high energy regime is
characterized by a de Sitter inflationary stage of geometrical character, i.e., without the presence
of the inflaton field. This taming of the initial singularity is also achieved for some spatially curved
FRW manifolds where the singularity is replaced by a de Sitter stage or a big bounce of the scale
factor depending on certain combinations of free parameters appearing in the action. Unlike other
Born-Infeld-like theories in vogue, the one here presented is also capable of deforming vacuum general
relativistic solutions.