%0 Journal Article
%T Hybrid Modified Gravity Unifying Local Tests, Galactic Dynamics and Late-Time Cosmic Acceleration
%A Capozziello, S.
%A Harko, T.
%A Lobo, F. S. N.
%A Olmo, G. J.
%J International Journal of Modern Physics D
%D 2013
%V 22
%N 12
%I World Scientific Publ Co Pte Ltd
%@ 0218-2718
%G English
%F Capozziello_etal2013
%O WOS:000329048900013
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1688), last updated on Thu, 30 Jan 2014 11:05:09 +0000
%X The nonequivalence between the metric and Palatini formalisms of f(R) gravity is an intriguing feature of these theories. However, in the recently proposed hybrid metric-Palatini gravity, consisting of the superposition of the metric Einstein-Hilbert Lagrangian with an f(R) term constructed a la Palatini, the "true" gravitational field is described by the interpolation of these two nonequivalent approaches. The theory predicts the existence of a light long-range scalar field, which passes the local constraints and affects the galactic and cosmological dynamics. Thus, the theory opens new possibilities for a unified approach, in the same theoretical framework, to the problems of dark energy and dark matter, without distinguishing a priori matter and geometric sources, but taking their dynamics into account under the same standard.
%K Modified gravity
%K late-time cosmic acceleration
%K dark matter
%K solar system tests
%R 10.1142/S0218271813420066
%U http://arxiv.org/abs/1305.3756
%U https://doi.org/10.1142/S0218271813420066
%P 1342006-7pp