Axions from cosmic string and wall decay

Details Axions from cosmic string and wall decay Axions from cosmic string and wall decay

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1274..103h&link_type=abstract

AXIONS 2010: Proceedings of the International Conference. AIP Conference Proceedings, Volume 1274, pp. 103-108 (2010).

Mathematics

Logic

Cosmology, Axions, Spontaneous Symmetry Breaking, Extended Classical Solutions, Cosmic Strings, Domain Walls, Texture, Spontaneous And Radiative Symmetry Breaking

Scientific paper

If inflation occurred with a reheat temperature > TPQ, axions from the decay of global axion strings and domain walls would make an important contribution to the cosmological energy density, comparable to that from vacuum misalignment. Several groups have numerically studied the evolution of axion strings and walls in the past, however substantial uncertainties remain in their contribution to the present density Ωa,string+wall~1-100(fa/1012 GeV)7/6, where fa is the axion decay constant. I will describe the numerical methods used in our simulations and show results for several string and wall configurations.

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