Confinement effects of levitons in a graphene cosmology laboratory
2014-12-22T16:44:21Z (GMT) by
The leviton, a long-lifetime soliton that rides the Fermi sea, is described here for a graphene system with a potential barrier. A full description of the leviton into the barrier is given for different angles of incidence. This is achieved by analysing the probability density of the leviton quasiparticle as a function of time. The transmission of the wavepacket through the oblique barrier occurs with negative refraction for low ratios of leviton energy to gate potential. In moderately strong magnetic fields a levity vortex becomes localised in space outside the barrier forming interior vortex states as it circulates. Also, when the field is switched on with an anti-leviton already formed inside the barrier, the quasiparticle becomes trapped and flows along its channel. Thus, the graphene system with leviton/anti-leviton propagation into and inside a barrier is a metamaterial whereby the direction of the quasiparticle can be controlled at will through the angle of the barrier and timing of switching on and off the magnetic fields. We present this analysis of barrier penetration for the inception of leviton electronics in graphene. The results lead to the possibility to create the graphene systems with levitons to explore cosmological questions such as hidden or “dark” energy conditions and therewith may also give some clues for understanding the discrepancies occurring between observed energy levels in the Universe and that of prediction.