Gauge-invariant cosmological perturbations in generalized Einstein theories

T. Hirai; K. Maeda

doi:10.1086/174463

Gauge-invariant cosmological perturbations in generalized Einstein theories

T. Hirai^*, K. Maeda

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

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.

Original language	English
Pages (from-to)	6-19
Number of pages	14
Journal	Astrophysical Journal
Volume	431
Issue number	1
DOIs	https://doi.org/10.1086/174463
Publication status	Published - 1994 Aug 10
Externally published	Yes

Keywords

Cosmology: theory
Galaxies: formation
Large-scale structure of universe
Relativity

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/174463

Cite this

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AU - Maeda, K.

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N2 - 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.

AB - 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.

KW - Cosmology: theory

KW - Galaxies: formation

KW - Large-scale structure of universe

KW - Relativity

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Gauge-invariant cosmological perturbations in generalized Einstein theories

Abstract

Keywords

ASJC Scopus subject areas

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