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arXiv 0706.0928gr-qcastro-ph
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经典自旋粒子动力学的解析摄动方法

An Analytic Perturbation Approach for Classical Spinning Particle Dynamics

Dinesh Singh

摘要:

基于Mathisson-Papapetrou-Dixon(MPD)运动方程,提出了一种解析描述经典自旋粒子动力学的微扰方法。通过幂级数展开相对于粒子的自旋幅度,它示出了如何获得一般形式的解析表示的粒子的运动学和动力学的自由度,是正式适用于无限阶的扩展。在这种形式主义,它是可能的,以确定一个经典的模拟辐射修正粒子的质量和自旋由于自旋引力相互作用。这种方法的鲁棒性表明,通过显示如何明确计算的一阶动量和自旋张量分量的任意粒子运动在一般的时空背景。潜在的有趣的应用程序的基础上,这种扰动的方法进行了概述。

英文摘要:

A perturbation method to analytically describe the dynamics of a classical spinning particle, based on the Mathisson-Papapetrou-Dixon (MPD) equations of motion, is presented. By a power series expansion with respect to the particle's spin magnitude, it is shown how to obtain in general form an analytic representation of the particle's kinematic and dynamical degrees of freedom that is formally applicable to infinite order in the expansion. Within this formalism, it is possible to identify a classical analogue of radiative corrections to the particle's mass and spin due to spin-gravity interaction. The robustness of this approach is demonstrated by showing how to explicitly compute the first-order momentum and spin tensor components for arbitrary particle motion in a general space-time background. Potentially interesting applications based on this perturbation approach are outlined.

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