On the concept of the tunneling time

Details On the concept of the tunneling time On the concept of the tunneling time

1996-03-13

arxiv.org/abs/quant-ph/9603018v1

Physics

Quantum Physics

7 pages, LATEX, no figures

Scientific paper

Asymptotic time evolution of a wave packet describing a non-relativistic particle incident on a potential barrier is considered, using the Wigner phase-space distribution. The distortion of the trasmitted wave packet is determined by two time-like parameters, given by the energy derivative of the complex transmission amplitude. The result is consistent with various definitions of the tunneling time (e.g. the B\"{u}ttiker-Landauer time, the complex time and Wigner's phase time). The speed-up effect and the negative dispersion are discussed, and new experimental implications are considered.

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