The cosmic snap parameter in f(R) gravity

Details The cosmic snap parameter in f(R) gravity The cosmic snap parameter in f(R) gravity

2006-10-27

arxiv.org/abs/gr-qc/0610133v3

Class.Quant.Grav.24:3013-3020,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages; published version

Scientific paper

10.1088/0264-9381/24/11/014

We derive the expression for the snap parameter in f(R) gravity. We use the
Palatini variational principle to obtain the field equations and regard the
Einstein conformal frame as physical. We predict the present-day value of the
snap parameter for the particular case f(R)=R-const/R, which is the simplest
f(R) model explaining the current acceleration of the universe.

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