Peccei-Quinn symmetries without domains

Details Peccei-Quinn symmetries without domains Peccei-Quinn symmetries without domains

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phrvd..26.2176b&link_type=abstract

Physical Review D (Particles and Fields), Volume 26, Issue 8, 15 October 1982, pp.2176-2177

Physics

14

Scientific paper

In general, the unbroken discrete subgroup of a Peccei-Quinn symmetry gives rise to a domain problem-the formation of unacceptable domain walls in the course of the evolution of the early universe. In this paper, we construct an SU(5) model in which the unbroken discrete subgroup of a Peccei-Quinn symmetry is a trivial Z1. That means that there is no domain problem for this model. It is pointed out that in models with more than one global U(1) symmetry it is easy to achieve a solution to the domain problem.

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