Time dependent Stark ladders: Exact propagator and caustic control [PDF]
Emerson SadurniIn this note we present a new propagator for a particle in discrete space under the influence of a time-dependent field. With this result we are able to control the shape of caustics emerging from a point-like source, as the explicit form of the wavefronts can be put in terms of the external field.View original: http://arxiv.org/abs/1302.4008
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