Axion Bounds from Precision Cosmology

Details Axion Bounds from Precision Cosmology Axion Bounds from Precision Cosmology

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1274...66r&link_type=abstract

AXIONS 2010: Proceedings of the International Conference. AIP Conference Proceedings, Volume 1274, pp. 66-71 (2010).

Statistics

Applications

Axions, Cosmology, Dark Matter, Sky Surveys, Monte Carlo Methods, Origin And Formation Of The Universe, Dark Matter, Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc., Applications Of Monte Carlo Methods

Scientific paper

Depending on their mass, axions produced in the early universe can leave different imprints in cosmic structures. If axions have masses in the eV-range, they contribute a hot dark matter fraction, allowing one to constrain ma in analogy to neutrinos. In the more favored scenario where axions play the role of cold dark matter and if reheating after inflation does not restore the Peccei-Quinn symmetry, the axion field provides isocurvature fluctuations that are severely constrained by precision cosmology. There remains a small sliver in parameter space where isocurvature fluctuations could still show up in future probes.

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