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arXiv · 0909.5384

First-order adiabatic perturbations of a perfect fluid about a general FLRW background using the 1+3 covariant and gauge-invariant formalism

Sylvain D. Brechet·Michael P. Hobson·Anthony N. Lasenby
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Abstract

An analysis of adiabatic perturbations of a perfect fluid is performed to first-order about a general FLRW background using the 1+3 covariant and gauge-invariant formalism. The analog of the Mukhanov-Sasaki variable and the canonical variables needed to quantise respectively the scalar and tensor perturbations in a general FLRW background space-time are identified. The dynamics of the vector perturbations is also discussed.

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Sylvain D. Brechet, Michael P. Hobson, Anthony N. Lasenby. 2009-09-29. First-order adiabatic perturbations of a perfect fluid about a general FLRW background using the 1+3 covariant and gauge-invariant formalism. https://arxiv.org/abs/0909.5384

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