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Beyond Einstein's General Relativity
Francisco S. N. Lobo
Modern astrophysical and cosmological models are plagued with two severe theoretical difficulties, namely, the dark energy and the dark matter problems. Relative to the former, hig…
Crystal clear lessons on the microstructure of space-time and modified gravity
Francisco S. N. Lobo, Gonzalo J. Olmo, D. Rubiera-Garcia
We argue that a microscopic structure for space-time such as that expected in a quantum foam scenario, in which microscopic wormholes and other topological structures should play a…
Bianchi type I cosmological models in Eddington-inspired Born-Infeld gravity
Tiberiu Harko, Francisco S. N. Lobo, M. K. Mak
We consider the dynamics of a barotropic cosmological fluid in an anisotropic, Bianchi type I space-time in Eddington-inspired Born-Infeld (EiBI) gravity. By assuming an isotropic…
Generalized curvature-matter couplings in modified gravity
Tiberiu Harko, Francisco S. N. Lobo
In this work, we review a plethora of modified theories of gravity with generalized curvature-matter couplings. The explicit nonminimal couplings, for instance, between an arbitrar…
Higher-dimensional evolving wormholes satisfying the null energy condition
Mahdi Kord Zangeneh, Francisco S. N. Lobo, Nematollah Riazi
In this work, we consider the possibility of expanding wormholes in higher-dimensions, which is an important ingredient of modern theories of fundamental physics. An important moti…
Invariant solutions and Noether symmetries in Hybrid Gravity
Andrzej Borowiec, Salvatore Capozziello, Mariafelicia De Laurentis +4
Symmetries play a crucial role in physics and, in particular, the Noether symmetries are a useful tool both to select models motivated at a fundamental level, and to find exact sol…