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arXiv · 1305.3261

Optimal polarisation equations in FLRW universes

Thomas Tram·Julien Lesgourgues
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Abstract

This paper presents the linearised Boltzmann equation for photons for scalar, vector and tensor perturbations in flat, open and closed FLRW cosmologies. We show that E- and B-mode polarisation for all types can be computed using only a single hierarchy. This was previously shown explicitly for tensor modes in flat cosmologies but not for vectors, and not for non-flat cosmologies.

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Thomas Tram, Julien Lesgourgues. 2013-10-03. Optimal polarisation equations in FLRW universes. https://doi.org/10.1088/1475-7516%2F2013%2F10%2F002

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