The fermion spectrum in braneworld collisions

Details The fermion spectrum in braneworld collisions The fermion spectrum in braneworld collisions

2007-10-17

arxiv.org/abs/0710.3272v1

JHEP0712:053,2007

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 9 figures

Scientific paper

10.1088/1126-6708/2007/12/053

In braneworld collisions fermions originally localised on one brane can be transferred to another brane, or to a space-time boundary. By modelling branes as scalar field kinks we bounce them off boundaries and study resulting effects according to a braneworld observer. Extending on our previous work, we numerically compute the spectrum of excitations of fermion modes localised on the brane and boundary, in terms of the momentum $k$ along the brane dimensions. We find that the spectrum depends strongly on collision velocity and fermion-scalar coupling. Also, high-momentum modes tend to ``fall off'' the kinks and become delocalised radiation.

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