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Automatic invisible axion without domain walls

1982; Elsevier BV; Volume: 117; Issue: 3-4 Linguagem: Inglês

10.1016/0370-2693(82)90543-3

1873-2445

Savas Dimopoulos, Paul H. Frampton, Howard Georgi, Mark B. Wise,

Atomic and Subatomic Physics Research

We construct a grand unified model with three families of quarks and leptons based on an SU(9) gauge symmetry which automatically eliminates the strong CP puzzle with an invisible axion but which has no cosmological domain wall problem.