Phase delay time and superluminal propagation in barrier tunneling
Quantum Physics
2007-05-23 v1 Mesoscale and Nanoscale Physics
Abstract
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".
Cite
@article{arxiv.quant-ph/0411161,
title = {Phase delay time and superluminal propagation in barrier tunneling},
author = {Swarnali Bandopadhyay and A. M. Jayannavar},
journal= {arXiv preprint arXiv:quant-ph/0411161},
year = {2007}
}
Comments
5 pages, 5 figures