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arXiv math-ph/0108017math-phgr-qcmath.MP
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Maxwell方程局部守恒律的分类

Classification of local conservation laws of Maxwell's equations

Stephen C. Anco, Juha Pohjanpelto

摘要:

本文给出了四维Minkowski空间中Maxwell方程组的所有独立局部守恒律的一个完整而明确的分类。除了基本线性守恒定律以及与守恒应力-能量和零张量相关的众所周知的二次守恒定律之外,还有与新的守恒张量相关的手征二次守恒定律。在麦克斯韦方程组的电磁对偶变换下,手征守恒律具有奇宇称,而应力-能量守恒律和零守恒律具有偶宇称。分类的主要结果表明,麦克斯韦方程组的每一个局部守恒定律都等价于基本守恒律、应力-能量守恒律和零守恒律、手征守恒律以及它们的高阶推广的线性组合,这些推广是通过用电磁场张量关于Minkowski空间上共形Killing矢量的重复李导数代替电磁场张量而得到的。分类是基于旋量的方法,并提供了一个直接的,统一的表征的守恒律的杀害旋量。

英文摘要:

A complete and explicit classification of all independent local conservation laws of Maxwell's equations in four dimensional Minkowski space is given. Besides the elementary linear conservation laws, and the well-known quadratic conservation laws associated to the conserved stress-energy and zilch tensors, there are also chiral quadratic conservation laws which are associated to a new conserved tensor. The chiral conservation laws possess odd parity under the electric-magnetic duality transformation of Maxwell's equations, in contrast to the even parity of the stress-energy and zilch conservation laws. The main result of the classification establishes that every local conservation law of Maxwell's equations is equivalent to a linear combination of the elementary conservation laws, the stress-energy and zilch conservation laws, the chiral conservation laws, and their higher order extensions obtained by replacing the electromagnetic field tensor by its repeated Lie derivatives with respect to the conformal Killing vectors on Minkowski space. The classification is based on spinorial methods and provides a direct, unified characterization of the conservation laws in terms of Killing spinors.

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。

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