TIME-DEPENDENT EVOLUTION OF A WAVE PACKET IN QUANTUM SYSTEMS

被引：0
|
作者：
Tang, Chi-Shung [1 ]
Luan, Pi-Gang [2 ]
机构：
[1] Natl United Univ, Dept Mech Engn, Maioli 36003, Taiwan
[2] Natl Cent Univ, Dept Opt & Photon, Chungli 32054, Taiwan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2008年 / 22卷 / 24期
关键词：
Time-dependent; wave packet; quantum system; Ehrenfest theorem; Lewis-Riesenfeld;
D O I：
10.1142/S0217979208048887
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We consider wave packet propagation in mesoscopic quantum systems. A number of approaches are compared to look at the general solution of a time-dependent Schrodinger equation and the validity of the Ehrenfest theorem. Detailed calculations are presented to illustrate the results of a charged particle motion in the time-dependent systems, and show that the Ehrenfest theorem is not directly applicable in topologically nontrivial systems.
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页码：4225 / 4241
页数：17
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