大学生园地

磁场中荷电粒子动量分量间不对易性和角动量的一个新关系

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  • 湖南大学物理与微电子科学学院理论物理研究所,湖南 长沙 410082
陈俊风( 2000—) ,男,四川人,湖南大学应用物理学 2018 级本科生.

收稿日期: 2021-05-24

  修回日期: 2021-07-07

  网络出版日期: 2021-12-15

基金资助

国家自然科学基金( 11675051) 资助

A new relation between angular momentum and non-commutativity of different components of momentum for a charge in a magnetic field

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  • School for Theoretical Physics,College of Physics and Electronics,Hunan University,Changsha,Hunan 410082,China

Received date: 2021-05-24

  Revised date: 2021-07-07

  Online published: 2021-12-15

摘要

磁场中荷电粒子动量不同分量间的泊松括号或者对易关系不为零,而是正比于一个磁场分量,本文证明了这个量正比于荷电粒子力学角动量的一个分量.这个关系可以认为磁性本质上是旋转性这一定性描述的定量表达.

本文引用格式

陈俊风, 谢蔚鑫, 王 鑫, 刘全慧 . 磁场中荷电粒子动量分量间不对易性和角动量的一个新关系[J]. 大学物理, 2021 , 40(12) : 49 . DOI: 10.16854 / j.cnki.1000-0712.210252

Abstract

It is known that for a charge particle in a magnetic field,the Poisson bracket or commutator of dif- ferent components of the momentum is proportional to a component of the magnetic field.It is demonstrated that it is proportional a component of the mechanical angular momentum. This new relation can be considered as a manifesta- tion of Maxwell's qualitative statement that magnetism is essentially rotational in nature.
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