Optimal polarisation equations in FLRW universes

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.

27 pages, prepared for submission to JCAP. Matches published version

References in corpus (1)

• CMB anisotropies from primordial inhomogeneous magnetic fields

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