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Beltrán Jiménez, José ; Cruz Dombriz, Álvaro de la ; Dunsby, Peter K. S. ; Sáez Gómez, Diego | IOP publishing ltd | 2014-05-21One possible explanation for the present observed acceleration of the Universe is the breakdown of homogeneity and isotropy due to the formation of non-linear structures. How inhomogeneities affect the averaged cosmological expansion rate and le[...]texto impreso
Cruz Dombriz, Álvaro de la ; Sáez Gómez, Diego | Multidisciplinary Digital Publishing Institute | 2012-09-18Along this review, we focus on the study of several properties of modified gravity theories, in particular on black-hole solutions and its comparison with those solutions in General Relativity, and on Friedmann-Lemaitre-Robertson-Walker metrics.[...]texto impreso
Alvarenga, F. G. ; Cruz Dombriz, Álvaro de la ; Houndjo, M. J. S. ; Rodrigues, M. E. ; Sáez Gómez, Diego | American Physical Society | 2013-05-28In the context of f(R, T) theories of gravity, we study the evolution of scalar cosmological perturbations in the metric formalism. According to restrictions on the background evolution, a specific model within these theories is assumed in order[...]texto impreso
