文献类型：期刊文献

英文题名：Induced fractional zero-point angular momentum for charged particles of the Bohm-Aharonov system by means of a "spectator" magnetic field

作者：Zhang, Jian-Zu

机构：[1]E China Univ Sci & Technol, Inst Theoret Phys, Shanghai 200237, Peoples R China

年份：2008

卷号：670

期号：3

起止页码：205

外文期刊名：PHYSICS LETTERS B

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000261794900008)】；

基金：The author would like to thank M. Peshkin for the helpful discussions and to Referee for the valuable comments. This work has been supported by the Natural Science Foundation of China under the grant number 10575037 and by the Shanghai Education Development Foundation.

语种：英文

摘要：An induced fractional zero-point angular momentum of charged particles by the Bohm-Aharonov (BA) vector potential is realized via a modified combined trap. It explores a "spectator" mechanism in this type of quantum effects: In the limit of the kinetic energy approaching one of its eigenvalues the BA vector potential alone cannot induce a fractional zero-point angular momentum at quantum mechanical level in the BA magnetic field-free region; But when there is a "spectator" magnetic field the BA vector potential induces a fractional zero-point angular momentum. The "spectator" does not contribute to such a fractional angular momentum, but plays essential role in guaranteeing non-trivial dynamics at quantum mechanical level in the required limit. This "spectator" mechanism is significant in investigating the BA effects and related topics in both aspects of theory and experiment. (c) 2008 Elsevier B.V. All rights reserved.