On the cosmological domain wall problem in supersymmetric models

Details On the cosmological domain wall problem in supersymmetric models On the cosmological domain wall problem in supersymmetric models

1998-04-27

arxiv.org/abs/hep-ph/9804409v2

Phys.Lett. B436 (1998) 264-268

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Latex, accepted for publication in Phys.Lett.B

Scientific paper

10.1016/S0370-2693(98)00861-2

Many models for dynamical supersymmetry breaking have the domain wall solution of the Kovner-Shifman type and therefore contain the potential cosmological domain wall problem.We show that the degeneracy of the vacua is lifted in any model in which the cosmological constant is fine-tuned to zero through an explicit $Z_{n}^{R}$ symmetry breaking constant in the superpotential. In this respect, we do not have to add unnatural non-renormalizable terms which explicitly break the symmetry. We also discuss the conditions for the safe decay of the walls for several concrete examples.

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