Affleck-Dine baryogenesis in type IIB string models

We propose a possible string embedding of affleck-dine baryogenesis in type iib sequestered models where the late-time decay of the lightest modulus reheats the universe to relatively low temperatures. we show that if inflation is driven by a blow-up kähler modulus, the affleck-dine field can become tachyonic during inflation if the kähler metric for matter fields has an appropriate inflaton-dependent contribution. we find that the affleck-dine mechanism can generate the observed baryon asymmetry for natural values of the underlying parameters which lead also to successful inflation and low-energy gaugino masses in a split supersymmetry scenario. the reheating temperature from the lightest modulus decay is high enough to allow thermal higgsino-like dark matter.