1-5 July 2019
Faculty of Physics, University of Warsaw
Europe/Warsaw timezone

CMB Spectral Distortions from Coherent Oscillations of Axions

Not scheduled
20m
Faculty of Physics, University of Warsaw

Faculty of Physics, University of Warsaw

conference hall 0.03, Faculty of Physics, University of Warsaw ul. Pasteura 5, 02-093 Warszawa Poland
Poster session

Speaker

Bryce Cyr (McGill)

Description

We investigate the impact of a Chern-Simons coupling, an interaction that is naturally present due to symmetry considerations, between axions and electromagnetism in the early universe. The inclusion of this coupling induces a parametric resonance in the U(1) gauge field once the axion starts oscillating, generating an explosive amount of photon production. These resonantly produced photons are highly non-thermal, and so their production between redshifts of 10^6 and 10^3 can disturb the blackbody nature of the CMB resulting in a spectral distortion. We compute the induced spectral distortion via this process and comment on general constraints and limitations of this model.

Primary author

Bryce Cyr (McGill)

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