TY  - JOUR
AU  - Beltran Jimenez, J.
AU  - Heisenberg, L.
AU  - Olmo, G. J.
AU  - Rubiera-Garcia, D.
PY  - 2018
DA  - 2018//
TI  - Born-Infeld inspired modifications of gravity
T2  - Phys. Rep.
JO  - Physics Reports
SP  - 1
EP  - 129
VL  - 727
PB  - Elsevier Science Bv
KW  - Born-Infeld gravity
KW  - Astrophysics
KW  - Black holes
KW  - Cosmology
KW  - Early universe
KW  - Compact objects
KW  - Singularities
AB  - General Relativity has shown an outstanding observational success in the scales where it has been directly tested. However, modifications have been intensively explored in the regimes where it seems either incomplete or signals its own limit of validity. In particular, the breakdown of unitarity near the Planck scale strongly suggests that General Relativity needs to be modified at high energies and quantum gravity effects are expected to be important. This is related to the existence of spacetime singularities when the solutions of General Relativity are extrapolated to regimes where curvatures are large. In this sense, Born-Infeld inspired modifications of gravity have shown an extraordinary ability to regularise the gravitational dynamics, leading to non-singular cosmologies and regular black hole spacetimes in a very robust manner and without resorting to quantum gravity effects. This has boosted the interest in these theories in applications to stellar structure, compact objects, inflationary scenarios, cosmological singularities, and black hole and wormhole physics, among others. We review the motivations, various formulations, and main results achieved within these theories, including their observational viability, and provide an overview of current open problems and future research opportunities.
SN  - 0370-1573
UR  - http://arxiv.org/abs/1704.03351
UR  - https://doi.org/10.1016/j.physrep.2017.11.001
DO  - 10.1016/j.physrep.2017.11.001
LA  - English
N1  - WOS:000425482900001
ID  - BeltranJimenez_etal2018
ER  -