Gauge-Invariant Cosmological Perturbations in Generalized Einstein Theories

Preprint

12 April 1994

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9404023

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.

Keywords

GENERALIZED EINSTEIN THEORIES
PERTURBATIONS IN GENERALIZED
COSMOLOGICAL PERTURBATIONS
ENHANCEMENT IN THE GROWTH
INVARIANT COSMOLOGICAL
GAUGE INVARIANT
BRANS
DICKE

All Related Versions

Version 1, 1994-04-12, ArXiv
Published version: The Astrophysical Journal, 431, 6.

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