Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2011-08-14
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
11 pages, 2 figures; V2:reference added; matched with the published version
Scientific paper
A modified form of non-locally corrected theory of gravity is investigated in the context of cosmology and the Newtonian limit. This form of non-local correction to classic Einstein-Hilbert action can be locally represented by a triple-scalar-tensor theory in which one of the scalar degree of freedom is phantom-like and the other two are quintessence-like. We show that there exists a stable de Sitter solution for the cosmological dynamics if a suitable form of potential function $V(\phi)$ (or equivalently, $f(R)$) is selected. However, no matter what a potential function is selected, there is always an early time repeller solution corresponding to a radiation dominated universe. Besides, the equations for linear scalar perturbations are presented and it is shown that the form of potential function $V(\phi)$ is stringently constrained by the Solar system test, although the post-Newtonian parameter $\gamma$ is not directly affected by this function.
Jin Xing-hua
Liu Dao-jun
Yang Bin
No associations
LandOfFree
A modified model of non-locally corrected gravity: Cosmology and the Newtonian limit does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A modified model of non-locally corrected gravity: Cosmology and the Newtonian limit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A modified model of non-locally corrected gravity: Cosmology and the Newtonian limit will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-712268