Cosmological Moduli Problem and Oscillating Inflation in Gauge-Mediated Supersymmetry Breaking
T. Asaka, M. Kawasaki, Masahide Yamaguchi
Abstract
We investigate cosmological moduli problem in the gauge-mediated supersymmetry breaking (GMSB). A mini-inflation (oscillating inflation) takes place when a scalar field corresponding to the flat direction in GMSB oscillates along the logarithmic potential induced by the gauge-mediation mechanism. It is shown that this oscillating inflation can sufficiently dilute the relic abundance of the string moduli for some ranges of parameters in the GMSB models.
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