Long-wavelength iteration scheme and scalar-tensor gravity

Details Long-wavelength iteration scheme and scalar-tensor gravity Long-wavelength iteration scheme and scalar-tensor gravity

1996-05-19

arxiv.org/abs/gr-qc/9605042v1

Phys.Rev.D55:3497-3504,1997

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, requires REVTeX, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.55.3497

Inhomogeneous and anisotropic cosmologies are modeled withing the framework of scalar-tensor gravity theories. The inhomogeneities are calculated to third-order in the so-called long-wavelength iteration scheme. We write the solutions for general scalar coupling and discuss what happens to the third-order terms when the scalar-tensor solution approaches at first-order the general relativistic one. We work out in some detail the case of Brans-Dicke coupling and determine the conditions for which the anisotropy and inhomogeneity decay as time increases. The matter is taken to be that of perfect fluid with a barotropic equation of state.

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