Grin, Daniel and Smith, Tristan and Kamionkowski, Marc (2010) Thermal axion constraints in non-standard thermal histories. In: AXIONS 2010. AIP Conference Proceedings (1274). American Institute of Physics , Melville, NY, pp. 78-84. ISBN 978-0-7354-0824-1 http://resolver.caltech.edu/CaltechAUTHORS:20110318-145420435
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There is no direct evidence for radiation domination prior to big-bang nucleosynthesis, and so it is useful to consider how constraints to thermally-produced axions change in non-standard thermal histories. In the low-temperature-reheating scenario, radiation domination begins as late as ~1 MeV, and is preceded by significant entropy generation. Axion abundances are then suppressed, and cosmological limits to axions are significantly loosened. In a kination scenario, a more modest change to axion constraints occurs. Future possible constraints to axions and low-temperature reheating are discussed.
|Item Type:||Book Section|
|Additional Information:||© 2010 American Institute of Physics. Issue Date: 30 August 2010. D.G. was supported by the Gordon and Betty Moore Foundation and thanks the organizers of Axions 2010. T.L.S. and M.K. were supported by DoE DE-FG03-92-ER40701 and the Gordon and Betty Moore Foundation.|
|Subject Keywords:||Dark matter, axions, reheating, large-scale structure, big-bang nucleosynthesis|
|Classification Code:||PACS: 14.80.Va; 26.35.+c; 11.30.Cp; 95.35.+d; 98.70.Vc|
|Official Citation:||Thermal axion constraints in non-standard thermal histories Daniel Grin, Tristan Smith, and Marc Kamionkowski, AIP Conf. Proc. 1274, 78 (2010), DOI:10.1063/1.3489561|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||18 Mar 2011 22:06|
|Last Modified:||26 Dec 2012 13:05|
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