Phase delay time and superluminal propagation in barrier tunneling

Details Phase delay time and superluminal propagation in barrier tunneling Phase delay time and superluminal propagation in barrier tunneling

2004-11-22

arxiv.org/abs/quant-ph/0411161v1

Physics

Quantum Physics

5 pages, 5 figures

Scientific paper

In this work we study the behaviour of Wigner phase delay time for tunneling in the reflection mode. Our system consists of a circular loop connected to a single wire of semi-infinite length in the presence of Aharonov-Bohm flux. We calculate the analytical expression for the saturated delay time. This saturated delay time is independent of Aharonov- Bohm flux and the width of the opaque barrier thereby generalizing the Hartman effect. This effect implies superluminal group velocities as a consequence. We also briefly discuss the concept called "space collapse or space destroyer".

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