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arXiv 1202.5757hep-thmath-phmath.MPquant-ph
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狄拉克方程的非格拉斯曼力学模型

Non-Grassmann mechanical model of the Dirac equation

A. A. Deriglazov, B. F. Rizzuti, G. P. Z. Chauca, P. S. Castro

摘要:

我们构造了一个没有格拉斯曼变量的自旋粒子模型的新例子。自旋自由度的基础上描述的内部anti-de Sitter空间。这在量化过程中产生$Γ^μ$和$Γ^{μν}$矩阵。该模型的正则量子化包含狄拉克方程。我们提出了详细的分析的拉格朗日和哈密顿公式的模型,并获得一般的解决方案的经典运动方程。将空间坐标的{ \it Zitterbewegung}与自旋的演化进行比较,探讨自旋内部空间的时空解释的可能性。我们列举了相似的狄拉克方程和两体系统的模型受到限制的潜力,只允许椭圆轨道的顺序的德布罗意波长度。狄拉克方程决定了椭圆轨道与质心运动方向的一致性。

英文摘要:

We construct a new example of the spinning-particle model without Grassmann variables. The spin degrees of freedom are described on the base of an inner anti-de Sitter space. This produces both $Γ^μ$ and $Γ^{μν}$\,-matrices in the course of quantization. Canonical quantization of the model implies the Dirac equation. We present the detailed analysis of both the Lagrangian and the Hamiltonian formulations of the model and obtain the general solution to the classical equations of motion. Comparing {\it Zitterbewegung} of the spatial coordinate with the evolution of spin, we ask on the possibility of space-time interpretation for the inner space of spin. We enumerate similarities between our analogous model of the Dirac equation and the two-body system subject to confining potential which admits only the elliptic orbits of the order of de Broglie wave-length. The Dirac equation dictates the perpendicularity of the elliptic orbits to the direction of center-of-mass motion.

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