An additional scalar field dilutes gravitino freeze-in dark matter for matter-like equations of state, permitting larger reheating temperatures consistent with leptogenesis.
Cosmological Constraints on the Scale of Supersymmetry Breaking,
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Gravitino Freeze-In Dark Matter with an Additional Scalar Field
An additional scalar field dilutes gravitino freeze-in dark matter for matter-like equations of state, permitting larger reheating temperatures consistent with leptogenesis.