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Photon enhancement in a homogeneous axion dark matter background

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arxiv 1810.03722 v2 pith:CNSPFCKV submitted 2018-10-08 hep-ph astro-ph.GA

Ariel Arza This is my paper · ORCID
classification hep-phastro-ph.GA
keywords axionbackgrounddarkenhancementhomogeneousmatterphotonphotons
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We study the propagation of photons in a homogeneous axion dark matter background. When the axion decay into two photons is stimulated, the photon field exhibits a parametric instability in a small bandwidth centered on one half of the axion mass. We estimate analytically the enhancement for both coherent and non-coherent axion fields and we find that this effect could be relevant in the context of miniclusters and galactic halos.

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  1. Quantum break in models of axion dark matter

    hep-ph 2019-08 conditional novelty 6.0 of 10

    A modified mean-field analysis predicts that axion dark matter can undergo a quantum break into photon pairs, with multi-mode synchronization counteracting red-shift detuning.

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