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Long-wavelength iteration scheme and scalar-tensor gravity

G. L. Comer·Nathalie Deruelle·David Langlois
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Abstract

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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G. L. Comer, Nathalie Deruelle, David Langlois. 1996-05-19. Long-wavelength iteration scheme and scalar-tensor gravity. https://doi.org/10.1103/physrevd.55.3497

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