Cosmological Moduli Problem and Oscillating Inflation in Gauge-Mediated Supersymmetry Breaking

Physics – High Energy Physics – High Energy Physics - Phenomenology

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Some typos and statements are corrected; to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(99)00213-0

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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