An additional scalar field dilutes gravitino freeze-in dark matter for matter-like equations of state, permitting larger reheating temperatures consistent with leptogenesis.
Radiative Production of Non-thermal Dark Matter
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abstract
We compare dark matter production from the thermal bath in the early universe with its direct production through the decay of the inflaton. We show that even if dark matter does not possess a direct coupling with the inflaton, Standard Model loop processes may be sufficient to generate the correct relic abundance.
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hep-ph 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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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.