The Dark Universe after Reheating in String Inflation

Abstract

We study the production of dark matter and dark radiation after reheating in string inflation models where the Calabi-Yau has a fibred structure and the visible sector lives on D3 branes. We show how the interplay between different physical constraints from inflation, reheating, supersymmetry breaking and dark radiation, leads to distinct predictions for the nature of dark matter.

arXiv comment12 pages, 4 figures

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• Higher Derivative Corrections to String Inflation
• Chiral global embedding of Fibre Inflation with $\overline{D3}$ uplift
• Dark matter and dark radiation from the early universe with a modulus coupled to the PQMSSM
• Hybrid Inflation, Reheating and Dark Radiation in a IIB perturbative moduli stabilization scenario
• String loop origin for dark radiation and superheavy dark matter in type IIB compactifications