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http://hdl.handle.net/11154/1957
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Title: | Time dependence of the probability density in the transient regime for tunneling |
Authors: | Villavicencio, J García-Calderon, G |
Issue Date: | 2001 |
Abstract: | An exact analytical solution to the time-dependent Schrodinger equation with cutoff wave initial conditions is used to investigate the fast tunneling response of a rectangular potential barrier. We find that just across the tunneling region, the probability density exhibits at short times a transient behavior that may be characterized by a peak t(p) and a width Deltat. We show that t(p) provides the earliest tunneling response of the system and that the top-barrier S-matrix poles play an important role in the process. As a function of the barrier width, t(p) exhibits two regimes. Along the first regime, t(p) remains almost a constant as the barrier width increases, a second regime appears where t(p) grows linearly with the barrier width. |
URI: | http://hdl.handle.net/11154/1957 |
ISSN: | 1050-2947 |
Appears in Collections: | Ciencias
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