Gauge invariant perturbations of Scalar-Tensor Cosmologies: The vacuum case

Details Gauge invariant perturbations of Scalar-Tensor Cosmologies: The vacuum case Gauge invariant perturbations of Scalar-Tensor Cosmologies: The vacuum case

2006-11-22

arxiv.org/abs/gr-qc/0611113v1

Phys.Rev.D74:123513,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, 3 figures, accepted for publication on PRD

Scientific paper

10.1103/PhysRevD.74.123513

The covariant gauge invariant perturbation theory of scalar cosmological perturbations is developed for a general Scalar-Tensor Friedmann-Lemaitre-Robertson-Walker cosmology in a vacuum. The perturbation equations are then solved exactly in the long wavelength limit for a specific coupling, potential and background. Differences with the minimally coupled case are briefly discussed.

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