Publication

Optimal polarisation equations in FLRW universes

Julien Lesgourgues
2013
Journal Articles

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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Optimal polarisation equations in FLRW universes

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