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arxiv: 2203.05464 · v3 · pith:QAW7KWQ7new · submitted 2022-03-10 · ✦ hep-th · hep-ph

Novel counterexample to the Nelson-Seiberg theorem

classification ✦ hep-th hep-ph
keywords fieldsmodelnon-zerocounterexamplecounterexamplesexpectationfieldgeneric
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We present a new type of counterexample to the Nelson-Seiberg theorem. It is a generic R-symmetric Wess-Zumino model with nine chiral superfields, including one field of R-charge 2 and no R-charge 0 field. As in previous counterexamples, the model gives a set of degenerate supersymmetric vacua with a non-zero expectation value for a pair of oppositely R-charged fields. However, one of these fields appears quadratically in the superpotential, and many other fields with non-zero R-charges gain non-zero expectation values at the vacuum, and so this model escapes the sufficient condition for counterexamples established in previous literature. Thus there are still open problems in the relation of R-symmetries to supersymmetry breaking in generic models.

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