Classical spin contribution to the Tunnel Effect

Details Classical spin contribution to the Tunnel Effect Classical spin contribution to the Tunnel Effect

1997-06-03

arxiv.org/abs/hep-th/9706022v1

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, 6 Figures, RevTeX

Scientific paper

10.1016/S0375-9601(98)00703-8

Since the spin of real particles is of order of $\hbar$, it is difficult to distinguish in a quantum mechanical experiment involving spinning particles what part of the outcome is related to the spin contribution and what part is a pure quantum mechanical effect. We analyze in detail a classical model of a nonrelativistic spinning particle under the action of a potential barrier and compute numerically the crossing for different potentials. In this way it is shown that because of the spin structure there is a nonvanishing contribution to crossing for energies above a certain minimum value, even below the top of the potential barrier. Results are compared with the quantum tunnel effect.

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