arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv quant-ph/0305175quant-ph
收藏

量子力学中守恒流的唯一性

Uniqueness of conserved currents in quantum mechanics

Peter Holland

摘要:

用泛函方法证明了Dirac流的传统表达式是Dirac方程所隐含的唯一守恒的4-矢量,它是量子态的函数.证明扩展到推导出的耦合麦克斯韦-狄拉克方程和克莱因-戈登方程所隐含的唯一的守恒电流。通常的泡利和薛定谔电流的唯一性是通过将它们分别视为狄拉克和克莱因-戈登电流的非相对论极限来实现的。进一步保守的向量,只是国家的功能的存在和属性进行检查。

英文摘要:

It is proved by a functional method that the conventional expression for the Dirac current is the only conserved 4-vector implied by the Dirac equation that is a function of just the quantum state. The demonstration is extended to derive the unique conserved currents implied by the coupled Maxwell-Dirac equations and the Klein-Gordon equation. The uniqueness of the usual Pauli and Schrodinger currents follows by regarding these as the non-relativistic limits of the Dirac and Klein-Gordon currents, respectively. The existence and properties of further conserved vectors that are not functions of just the state is examined.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑