Gauge-invariant cosmological perturbations in generalized Einstein theories

1 August 1994

journal article
Published by American Astronomical Society in The Astrophysical Journal

Vol. 431, 6-19
https://doi.org/10.1086/174463

Abstract

Using the covariant approach and conformal transformations, we present a gauge-invariant formalism for cosmological perturbations in generalized Einstein theories (GETs), including the Brans-Dicke theory, theories with a non-minimally coupled scalar field and certain curvature-squared theories. We find an enhancement in the growth rate of density perturbations in the Brans-Dicke theory, and discuss attractive features of GETs in the structure formation process.Comment: LaTeX, 24 pages, 4 figures available on request, to appear in ApJ, August 1994, WU-AP/32/9

Keywords

STRUCTURE
CONFORMAL
APJ
PERTURBATIONS
EINSTEIN
INVARIANT
FIGURES
SCALAR
COSMOLOGICAL
AP/32/9

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Version 1, 1994-04-12, ArXiv

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