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Modified gravity and its reconstruction from the universe expansion history
Shin'ichi Nojiri, Sergei D. Odintsov
We develop the reconstruction program for the number of modified gravities: scalar-tensor theory, , and string-inspired, scalar-Gauss-Bonnet gravity. The known (classi…
String-inspired Gauss-Bonnet gravity reconstructed from the universe expansion history and yielding the transition from matter dominance to dark energy
Guido Cognola, Emilio Elizalde, Shin'ichi Nojiri +2
We consider scalar-Gauss-Bonnet and modified Gauss-Bonnet gravities and reconstruct these theories from the universe expansion history. In particular, we are able to construct vers…
Modified gravity as an alternative for Lambda-CDM cosmology
Shin'ichi Nojiri, Sergei D. Odintsov
The reconstruction scheme is developed for modified gravity with realistic matter (dark matter, baryons, radiation). Two versions of such theory are constructed: the first o…
On the way from matter-dominated era to dark energy universe
Shin'ichi Nojiri, Sergei D. Odintsov, Hrvoje Stefancic
We develop the general program of the unification of matter-dominated era with acceleration epoch for scalar-tensor theory or dark fluid. The general reconstruction of single scala…
Modified f(R) gravity consistent with realistic cosmology: from matter dominated epoch to dark energy universe
Shin'ichi Nojiri, Sergei D. Odintsov
We develop the general scheme for modified gravity reconstruction from any realistic FRW cosmology. We formulate several versions of modified gravity compatible with Solar S…
The new form of the equation of state for dark energy fluid and accelerating universe
Shin'ichi Nojiri, Sergei D. Odintsov
We suggest to generalize the dark energy equation of state (EoS) by introduction the relaxation equation for pressure which is equivalent to consideration of the inhomogeneous EoS…