Nambu mass hierarchies in strings

Details Nambu mass hierarchies in strings Nambu mass hierarchies in strings

1994-05-31

arxiv.org/abs/hep-ph/9405429v1

Phys.Lett.B338:23-30,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LATEX, LPTHE 94/35

Scientific paper

10.1016/0370-2693(94)91338-2

We show that a recent proposal by Nambu to generate a hierarchy among Yukawa couplings in the standard model may be easily implemented in superstring models. In such models, two of the main ingredients of the Nambu proposal find a natural explanation: minimising with respect to the Yukawas amounts to a minimisation with respect to the underlying moduli fields and a constraint on the Yukawas of the type of the Veltman condition may be attributed to the relaxation process to a phenomenologically viable string vacuum.

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