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arxiv: gr-qc/0611113 · v1 · submitted 2006-11-22 · 🌀 gr-qc · astro-ph

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

Sante Carloni , Peter K. S. Dunsby , Claudio Rubano
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classification 🌀 gr-qc astro-ph
keywords casegaugeinvariantperturbationperturbationsscalar-tensorvacuumbackground
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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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