Particle transfer in braneworld collisions

Understand

We study the behaviour of fermions localized on moving kinks as these collide with either antikinks or spacetime boundaries.

• We numerically solve for the evolution of the scalar kinks and the bound (i.e.
• localized) fermion modes, and calculate the number of fermions transfered to the antikink and boundary in terms of Bogoliubov coefficients.
• Interpreting the boundary as the brane on which we live, this models the ability of fermions on branes incoming from the bulk to ``stick'' on the world brane, even when the incoming branes bounce back into the bulk.