✦ LIBER ✦

Axions from string decay

✍ Scribed by C. Hagmann; S. Chang; P. Sikivie

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 422 KB
Volume: 72
Category: Article
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(98)00506-4

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✦ Synopsis

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 energy 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.

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