| J. Preskill et. al., Phys. Lett. 120B, (1983) 127; L. F. Abbott, and P. Sikivie, Phys. Lett. 120B, (1983) 133; and M. Dine and W. Fischler,Phys. Lett. 120B (1983) 137 |
....broken at higher energies and hence are more weakly coupled to the light fermions (weak enough to be undetected) This way one ensures that there are no light goldstone bosons at the electroweak scale. However, f would have to be between 10 10 GeV and 10 12 GeV from cosmological [17] and astrophysical considerations [18] The above discussion can be stated in more general terms. A reason for the problem is well known too many representations [6] If the number of irreducible representations (nD ) is less than or equal to the number of simple non abelian gauge group factors ....
J. Preskill et. al., Phys. Lett. 120B, (1983) 127; L. F. Abbott, and P. Sikivie, Phys. Lett. 120B, (1983) 133; and M. Dine and W. Fischler,Phys. Lett. 120B (1983) 137
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