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arXiv · 1504.01900

The decoupling of scalar-modes from a linearly perturbed dust-filled Bianchi type I model

Bob Osano
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Abstract

We study linear perturbations about a dust filled Bianchi Type I model with the vorticity set to zero. In comparison to linear perturbations about FLRW models, modes of perturbations about Bianchi type I models are coupled. We find that the tensor that represents the background shear needs to be degenerate in order for the scalar-mode perturbations to decouple from the rest of the flow.

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Bob Osano. 2015-04-08. The decoupling of scalar-modes from a linearly perturbed dust-filled Bianchi type I model. https://doi.org/10.1088/0256-307x%2F31%2F1%2F010402

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