Relaxing the cosmological bound on axions

Details Relaxing the cosmological bound on axions Relaxing the cosmological bound on axions

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..192..323l&link_type=abstract

Physics Letters B, Volume 192, Issue 3-4, p. 323-326.

Physics

41

Scientific paper

The usual cosmological bound on axions states that the axion decay constant ƒ;a <~ 1012 GeV in order that the energy density in axions today is not unacceptably large. It is shown that this bound on ƒ;a can be substantially relaxed in a class of superstring models with a superheavy intermediate scale. Implications for the model-independent axion of superstring theories are indicated.
Supported in part by the Department of Energy under Contract Number DE-AC02-78ER05007.

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