Cosmological perturbations in a gravity with quadratic order curvature couplings
General Relativity and Quantum Cosmology
2011-08-17 v1 Astrophysics
Abstract
We present a set of equations describing the evolution of the scalar-type cosmological perturbation in a gravity with general quadratic order curvature coupling terms. Equations are presented in a gauge ready form, thus are ready to implement various temporal gauge conditions depending on the problems. The Ricci-curvature square term leads to a fourth-order differential equation for describing the spacetime fluctuations in a spatially homogeneous and isotropic cosmological background.
Keywords
Cite
@article{arxiv.gr-qc/9811013,
title = {Cosmological perturbations in a gravity with quadratic order curvature couplings},
author = {H. Noh and J. Hwang},
journal= {arXiv preprint arXiv:gr-qc/9811013},
year = {2011}
}
Comments
5 pages, no figure, To appear in Phys. Rev. D