Axions, domain walls, and the early universe

Details Axions, domain walls, and the early universe Axions, domain walls, and the early universe

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvl..48.1156s&link_type=abstract

Physical Review Letters, vol. 48, Apr. 26, 1982, p. 1156-1159. Research supported by the U.S. Department of Energy.

Physics

275

Broken Symmetry, Cosmology, Domain Wall, Quantum Theory, Galactic Evolution, Solitary Waves, Vacuum

Scientific paper

Axion models have a spontaneously broken Z(N) symmetry. The resulting discretely degenerate vacua and domain-wall solitons are incompatible with the standard cosmology. It is possible, however, to introduce a small Z(N) breaking interaction into axion models without upsetting the Peccei-Quinn mechanism. In that case the domain walls disappear a certain time after their formation in the early universe. Their presence for a limited time period might lead to galaxy formation.

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