Axions from string decay

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Description

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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9 p.

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Hagmann, C., LLNL July 9, 1998.

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Description

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.

Physical Description

9 p.

Notes

OSTI as DE98058843

Other: FDE: PDF; PL:

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  • 5. Institute for Fundamental Theory workshop, Gainesville, FL (United States), 13-15 Mar 1998

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  • Other: DE98058843
  • Report No.: UCRL-JC--131307
  • Report No.: CONF-9803109--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 292298
  • Archival Resource Key: ark:/67531/metadc681554

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  • July 9, 1998

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  • July 25, 2015, 2:20 a.m.

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  • April 6, 2017, 6:16 p.m.

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Hagmann, C., LLNL. Axions from string decay, article, July 9, 1998; California. (digital.library.unt.edu/ark:/67531/metadc681554/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.