Inflationary Axion Cosmology Beyond Our Horizon

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In theories of axion dark matter with large axion decay constant, temperature variations in the CMB are extremely sensitive to perturbations in the initial axion field, allowing one to place a lower bound on the total amount of inflation. The most stringent bound comes from axion strings, which for axion decay constant f=10^17 GeV would currently be observable at a distance of 6 x 10^16 light-years, nearly ten million times as far away as our horizon.

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Astrophysics, High Energy Physics - Phenomenology, Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/168592

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0809.1206
 http://arxiv.org/abs/0809.1206

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arXiv