The cosmic jerk parameter in f(R) gravity

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

2006-07-06

arxiv.org/abs/gr-qc/0607021v2

Phys.Lett. B640 (2006) 135-137

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages; published version

Scientific paper

10.1016/j.physletb.2006.07.056

We derive the expression for the jerk parameter in $f(R)$ gravity. We use the
Palatini variational principle and the field equations in the Einstein
conformal gauge. For the particular case $f(R)=R-\frac{\alpha^2}{3R}$, the
predicted value of the jerk parameter agrees with the SNLS SNIa and X-ray
galaxy cluster distance data but does not with the SNIa gold sample data.

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