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arXiv 2109.07475gr-qcphysics.class-ph
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时空中旋量场和张量场的标量预势

Scalar Pre-potentials for Spinor and Tensor Fields on Spacetime

Robin W. Tucker, Timothy J. Walton

摘要:

本文综述了在闵可夫斯基时空中求解一类与物理学相关的经典线性偏微分方程组的方法。所有的方程都服从于分析的标量拉普拉斯算子和复杂的赫兹潜力的核心复杂的解决方案。复化处方确保存在的常规物理解决方案的手征性和传播,非奇异,脉冲状的特点,在所有三个空间维度的范围内。该技术应用于无源麦克斯韦,波普-兰德-波多尔斯基和线性化的爱因斯坦场系统,并使用特定的解决方案来构建描述单周期激光脉冲的经典模型,并讨论了启动天体物理射流的机制。我们的文章最后简要介绍了时空克利福德代数理想,我们用来表示旋量场。我们采用这些来证明如何使用相同的技术张量场使一个新的传播,手征,非奇异,脉冲状旋量解决方案的无质量狄拉克方程在闵可夫斯基时空。

英文摘要:

We review a technique for solving a class of classical linear partial differential systems of relevance to physics in Minkowski spacetime. All the equations are amenable to analysis in terms of complex solutions in the kernel of the scalar Laplacian and a complexified Hertz potential. The complexification prescription ensures the existence of regular physical solutions with chirality and propagating, non-singular, pulse-like characteristics that are bounded in all three spatial dimensions. The technique is applied to the source-free Maxwell, Bopp-Landé-Podolsky and linearised Einstein field systems, and particular solutions are used for constructing classical models describing single-cycle laser pulses and a mechanism is discussed for initiating astrophysical jets. Our article concludes with a brief introduction to spacetime Clifford algebra ideals that we use to represent spinor fields. We employ these to demonstrate how the same technique used for tensor fields enables one to construct new propagating, chiral, non-singular, pulse-like spinor solutions to the massless Dirac equation in Minkowski spacetime.

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