Mirror World and Axion: Relaxing Cosmological Bounds

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dc.creatorMaurizio, Giannotti
dc.date2005-04-28
dc.date.accessioned2026-07-07T02:17:33Z
dc.date.available2026-07-07T02:17:33Z
dc.descriptionThe cosmological (upper) limit on the Peccei-Quinn constant, related to the primordial oscillations of the axion field, can be relaxed for a mirror axion model. The simple reason is that the mirror world is colder and so the behavior of the axion temperature-dependent mass is dominated by the contribution from the mirror sector. So the coherent oscillations start earlier and correspondingly the axion mass density Ω_a h^2 is reduced.
dc.descriptionVI Friedmann Seminar, France, Corsica, Cargese, 2004, LaTeX, 5 pages. To be published in Int. J. Mod. Phys. A
dc.identifierhttps://arxiv.org/abs/astro-ph/0504636
dc.identifierhttp://arxiv.org/abs/astro-ph/0504636
dc.identifierInt.J.Mod.Phys. A20 (2005) 2454-2458
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/9209
dc.subjectAstrophysics
dc.titleMirror World and Axion: Relaxing Cosmological Bounds
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