Abstract
We propose a new scenario of baryon number violations in models with extra dimensions. In the true vacuum, the baryon number is almost conserved due to the localization mechanism of matter fields, which suppresses the interactions between quarks and leptons. We consider several types of cosmological defects in four-dimensional spacetime that shift the center of the localized matter fields, and show that the magnitudes of the baryon number-violating interactions are well enhanced. The application to baryogenesis is also discussed.
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