再谈拉格朗日函数非唯一性的物理意义:广义规范变换和正则变换的等价性证明REMARKS ON THE NON-UNIQUENESS OF LAGRANGE FUNCTION: AN EQUIVALENCE PROOF BETWEEN THE GAUGE AND CANONICAL TRANSFORMATIONS
韦联福
摘要(Abstract):
关于力学系统拉格朗日函数非唯一性问题所蕴含的物理意义,各种教学研究期刊都刊发了不少论文进行论述,但仍存在某些争议。本文从拉格朗日函数非唯一性等价于动力学系统广义规范选择的任意性这一基本性质出发,证明无论是拉格朗日方程还是哈密顿正则运动方程都具有这种规范变换的协变性。由此,澄清了近期一些文献和网络上关于文献中规范变换是否可以看作是一种正则变换的争议,供教学参考。
关键词(KeyWords): 拉格朗日函数的非唯一性;规范选择任意性;规范变换;正则变换
基金项目(Foundation): 上海高校本科重点教改项目(SJ201905);; 国家自然科学基金(11974290)
作者(Author): 韦联福
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