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arXiv · 1111.3141

How a cold axion background influences photons

Domènec Espriu·Albert Renau
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Abstract

A cold relic axion condensate resulting from vacuum misalignment in the early universe oscillates with a frequency \sim m_a, where m_a is the axion mass. We summarize how the properties of photons propagating in such a medium are modified. Although the effects are small due to the magnitude of the axion-photon coupling, some consequences are striking.

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Domènec Espriu, Albert Renau. 2011-11-14. How a cold axion background influences photons. https://arxiv.org/abs/1111.3141

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