@Article{Bambi_etal2016,
author="Bambi, C.
and Cardenas-Avendano, A.
and Olmo, G. J.
and Rubiera-Garcia, D.",
title="Wormholes and nonsingular spacetimes in Palatini f(R) gravity",
journal="Physical Review D",
year="2016",
publisher="Amer Physical Soc",
volume="93",
number="6",
pages="064016--8pp",
abstract="We reconsider the problem of f(R) theories of gravity coupled to Born-Infeld theory of electrodynamics formulated in a Palatini approach, where metric and connection are independent fields. By studying electrovacuum configurations in a static and spherically symmetric spacetime, we find solutions which reduce to their Reissner-Nordstrom counterparts at large distances but undergo important nonperturbative modifications close to the center. Our new analysis reveals that the pointlike singularity is replaced by a finite-size wormhole structure, which provides a geodesically complete and thus nonsingular spacetime, despite the existence of curvature divergences at the wormhole throat. Implications of these results, in particular for the cosmic censorship conjecture, are discussed.",
optnote="WOS:000371742700005",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2575), last updated on Fri, 01 Apr 2016 22:06:26 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.93.064016",
opturl="http://arxiv.org/abs/1511.03755",
opturl="https://doi.org/10.1103/PhysRevD.93.064016",
archivePrefix="arXiv",
eprint="1511.03755",
language="English"
}