Spacetime dynamics and baryogenesis in the braneworld

We point out that the effective theory for the Randall-Sundrum braneworld models with bulk fields contains the baryon number violation process depending on the spacetime dynamics. By combining with the curvature - current interaction, the net baryon number observed today may be explained. The resultant baryon to entropy ratio is determined by the ratio of the Planck scales in four-dimensional and five-dimensional spacetime except for the parameter for CP violation.