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Abebe, Amare ; Abdelwahab, Mohamed ; Cruz Dombriz, Álvaro de la ; Dunsby, Peter K. S. | Institute of Physics | 2012-07-07We study the evolution of scalar cosmological perturbations in the 1 + 3 covariant gauge-invariant formalism for generic f(R) theories of gravity. Extending previous works, we give a complete set of equations describing the evolution of matter a[...]texto impreso
Abebe, Amare ; Cruz Dombriz, Álvaro de la ; Dunsby, Peter K. S. | American Physical Society | 2013-08-26Over the past few years much attention has been given to the study of modified gravity theories in order to find a more natural explanation for the late time acceleration of the Universe. Nevertheless, a comparison of the matter power spectrum p[...]
