On Superluminal motions in photon and particle tunnelings

Details On Superluminal motions in photon and particle tunnelings On Superluminal motions in photon and particle tunnelings

1998-10-16

arxiv.org/abs/quant-ph/9810053v1

Phys.Lett. A248 (1998) 156-160

Physics

Quantum Physics

standard LaTeX file; accepted for publication in Phys. Lett. A

Scientific paper

10.1016/S0375-9601(98)00626-4

It is shown that the Hartman-Fletcher effect is valid for all the known expressions of the mean tunnelling time, in various nonrelativistic approaches, for the case of finite width barriers without absorption. Then, we show that the same effect is not valid for the tunnelling time mean-square fluctuations. On the basis of the Hartman-Fletcher effect and the known analogy between photon and nonrelativistic-particle tunnelling, one can explain the Superluminal group-velocities observed in various photon tunnelling experiments (without violation of the so-called "Einstein causality").

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