Axion cosmology
نویسندگان
چکیده
منابع مشابه
Axion Cosmology
The Strong CP Problem and its resolution through the existence of an axion are briefly reviewed. The combined constraints from accelerator searches, the evolution of red giants and the duration of the SN 1987a neutrino pulse require the axion mass ma to be less than 3 · 10−3 eV. On the other hand, the requirement that the axion does not overclose the universe implies a lower bound on ma of orde...
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In this lecture we review several cosmological issues associated with the axion. Axion solves the strong CP problem and is a good candidate for the dark matter. Limits, which are imposed by the value of isocurvature fluctuations fraction in the observed CMBR from WMAP data and the domain wall problem are discussed in a supersymmetric flat direction axion model. This lecture was given at XII’th ...
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We review current cosmological constraints on the axion. We describe the basic mechanisms by which axions are created in the early universe, focussing on the standard thermal scenario where the dominant process is through axion radiation by a string network. A dark matter axion in this case would have a mass ma ∼ 100 μeV, with specified large uncertainties. This cosmological lower bound leaves ...
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ژورنال
عنوان ژورنال: Physics Reports
سال: 2016
ISSN: 0370-1573
DOI: 10.1016/j.physrep.2016.06.005