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A variation of Affleck-Dine mechanism was proposed to generate the observedbaryon asymmetry in [1], in which the inflaton was assumed to be a complexscalar field with a weakly broken $U(1)$ symmetry, and the baryon asymmetrygeneration was easily unified with the stage of inflation and reheating. Weadapt this mechanism to natural inflation scenarios and compare the resultswith those in chaotic inflation models. We compute the net particle numberobtained at the end of inflation and transform it into net baryon number afterreheatings. We observed that in natural inflation models, the desiredbaryon-to-photon ratio can be achieved equally well as in chaotic models.

Baryon Asymmetries in the Natural Inflation Model