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[en] We point out that, in a class of gauge mediation models using metastable supersymmetry break- ing vacua, the minimum of the supersymmetry breaking field in the early universe is dynamically deviated from the one in the low energy. The deviation induces coherent oscillations of the supersymmetry breaking field, which decays into the gravitinos. For certain parameters, it can produce a right amount of the gravitinos to account for the observed dark matter. (orig.)
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Oct 2007; 11 p; ISSN 0418-9833; 