TY  - JOUR
AU  - Capozziello, S.
AU  - Harko, T.
AU  - Lobo, F. S. N.
AU  - Olmo, G. J.
PY  - 2013
DA  - 2013//
TI  - Hybrid Modified Gravity Unifying Local Tests, Galactic Dynamics and Late-Time Cosmic Acceleration
T2  - Int. J. Mod. Phys. D
JO  - International Journal of Modern Physics D
SP  - 1342006
EP  - 7pp
VL  - 22
IS  - 12
PB  - World Scientific Publ Co Pte Ltd
KW  - Modified gravity
KW  - late-time cosmic acceleration
KW  - dark matter
KW  - solar system tests
AB  - 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.
SN  - 0218-2718
UR  - http://arxiv.org/abs/1305.3756
UR  - https://doi.org/10.1142/S0218271813420066
DO  - 10.1142/S0218271813420066
LA  - English
N1  - WOS:000329048900013
ID  - Capozziello_etal2013
ER  -