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Transmission time in the reflectionless complex potential |
Yin Cheng (殷澄)a, Wang Xian-Ping (王贤平)b, Shan Ming-Lei (单鸣雷)a, Han Qing-Bang (韩庆邦)a, Zhu Chang-Ping (朱昌平)a |
a Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China; b School of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China |
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Abstract A phase time definition directly obtained from the Schrödinger equation is used to investigate the time delay of a particle scattered by complex reflectionless potential. The artifacts introduced by truncating in the numerical simulation are clarified. The time delay of the transmitted wave packet is found to be equal to the reflection time of the truncated potential. Both time delays are the same as the traversal time in the free space, but shorter than the time taken by a classical particle to pass the same potential.
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Received: 15 January 2014
Revised: 16 April 2014
Accepted manuscript online:
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PACS:
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03.65.Ca
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(Formalism)
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03.65.Xp
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(Tunneling, traversal time, quantum Zeno dynamics)
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03.75.Be
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(Atom and neutron optics)
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Fund: Project supported by the Fundamental Research Funds for the Central Universities of Hohai University, China (Grant No. 2012B04114) and the National Natural Science Foundation of China (Grant Nos. 10974044 and 11274091). |
Corresponding Authors:
Han Qing-Bang
E-mail: hqb0092@163.com
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About author: 03.65.Ca; 03.65.Xp; 03.75.Be |
Cite this article:
Yin Cheng (殷澄), Wang Xian-Ping (王贤平), Shan Ming-Lei (单鸣雷), Han Qing-Bang (韩庆邦), Zhu Chang-Ping (朱昌平) Transmission time in the reflectionless complex potential 2014 Chin. Phys. B 23 100301
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