dorsal/arxiv
View SchemaPhase delay time and superluminal propagation in barrier tunneling
| Authors | Swarnali Bandopadhyay, A. M. Jayannavar |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0411161 |
| URL | https://arxiv.org/abs/quant-ph/0411161 |
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".
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"abstract": "In this work we study the behaviour of Wigner phase delay time for tunneling\nin the reflection mode. Our system consists of a circular loop connected to a\nsingle wire of semi-infinite length in the presence of Aharonov-Bohm flux. We\ncalculate the analytical expression for the saturated delay time. This\nsaturated delay time is independent of Aharonov- Bohm flux and the width of the\nopaque barrier thereby generalizing the Hartman effect. This effect implies\nsuperluminal group velocities as a consequence. We also briefly discuss the\nconcept called \"space collapse or space destroyer\".",
"arxiv_id": "quant-ph/0411161",
"authors": [
"Swarnali Bandopadhyay",
"A. M. Jayannavar"
],
"categories": [
"quant-ph",
"cond-mat.mes-hall"
],
"title": "Phase delay time and superluminal propagation in barrier tunneling",
"url": "https://arxiv.org/abs/quant-ph/0411161"
},
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