arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0411161quant-phcond-mat.mes-hall
收藏

势垒隧穿中的相位延迟时间和超光速传播

Phase delay time and superluminal propagation in barrier tunneling

Swarnali Bandopadhyay, A. M. Jayannavar

摘要:

在这项工作中,我们研究的行为维格纳相位延迟时间隧道反射模式。我们的系统由一个圆形回路连接到一个半无限长的单根导线中存在的Aharonov-Bohm通量。我们计算了饱和延迟时间的解析表达式。该饱和延迟时间与Aharonov-Bohm通量和不透明势垒的宽度无关,从而推广了哈特曼效应。这种效应意味着超光速群速度的结果。我们还简要讨论了所谓的“空间塌陷或空间破坏者”的概念。

英文摘要:

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".

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑