Axions from string decay
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
We have studied numerically the evolution and decay of axion strings. These global defects decay mainly by axion emission and thus contribute to the cosmological axion density. The relative importance of this source relative to misalignment production of axions depends on the spectrum. Radiation spectra for various string loop configurations are presented. They support the contention that the string decay contribution is of the same order of magnitude as the contribution from misalignment.
Keywords
Cite
@article{arxiv.hep-ph/9807428,
title = {Axions from string decay},
author = {C. Hagmann and S. Chang and P. Sikivie},
journal= {arXiv preprint arXiv:hep-ph/9807428},
year = {2009}
}
Comments
6 pages, 8 figures, to be published in the Proc. of the 5th IFT Axion workshop, Gainesville FL, Mar 13-15 1998, 2 sentences slightly changed