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Your search keyword '"Sadeghi, J."' showing total 15 results
Start Over Author "Sadeghi, J." Journal physics letters b
15 results on '"Sadeghi, J."'

15. Logarithmic corrected F(R) gravity in the light of Planck 2015.

Author

Sadeghi, J. and Farahani, H.

Subjects
*LOGARITHMIC functions, *GRAVITY, *PLANCK'S energy, *SPACES of constant curvature, *CRITICAL point (Thermodynamics), *GRAVITATIONAL fields
Abstract

In this Letter, we consider the theory of F ( R ) gravity with the Lagrangian density £ = R + α R 2 + β R 2 ln ⁡ β R . We obtain the constant curvature solutions and find the scalar potential of the gravitational field. We also obtain the mass squared of a scalaron in the Einstein's frame. We find cosmological parameters corresponding to the recent Plank 2015 results. Finally, we analyze the critical points and stability of the new modified theory of gravity and find that logarithmic correction is necessary to have successful model. [ABSTRACT FROM AUTHOR]

Published
2015
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