Finite correction to Aharonov-Bohm scattering by a contact potential

被引：0
|
作者：
Qiong-Gui Lin
Xin-Jian Hu
机构：
[1] China Center of Advanced Science and Technology (World Laboratory),Department of Physics
[2] Sun Yat-Sen University,undefined
来源：
The European Physical Journal B | 2007年 / 56卷
关键词：
03.65.Nk Scattering theory; 03.65.Vf Phases: geometric; dynamic or topological;
D O I：
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学科分类号：
摘要：
We study the influence of a contact (or delta) potential on the Aharonov-Bohm scattering of nonrelativistic particles. In general the contact potential has no effect on the scattering as expected. However, when the magnetic flux and the strength of the contact potential take some special values, the Aharonov-Bohm scattering cross-section is manifestly changed. It is shown that these special values correspond to the simultaneous existence of two half-bound states in two adjacent angular momentum channels. Two limiting processes are presented to deal with the singularity of the contact potential and results of the same nature are obtained.
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页码：235 / 241
页数：6
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