arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.4140hep-th
收藏

Poincare群扩张的无穷序列:结构与动力学

Infinite Sequence of Poincare Group Extensions: Structure and Dynamics

Sotirios Bonanos, Joaquim Gomis

摘要:

本文研究了Poincar{é}代数的无限扩张序列的结构和动力学,其构造方法在文献[1]中已有描述.我们明确给出了直到第三级的扩展李代数的Maurer-Cartan(MC)1-形式。使用这些形式,并引入相应的一组新的动力学耦合,我们构建了一个不变的拉格朗日,它描述了带电粒子在外部电磁场的分布的动态。在每一个延伸,分布近似的一组力矩的世界线的质心和场的泰勒级数展开的同一条线。第二次延拓后的运动方程包含了世界线上力矩的反作用项。

英文摘要:

We study the structure and dynamics of the infinite sequence of extensions of the Poincar{é} algebra whose method of construction was described in a previous paper [1]. We give explicitly the Maurer-Cartan (MC) 1-forms of the extended Lie algebras up to level three. Using these forms and introducing a corresponding set of new dynamical couplings, we construct an invariant Lagrangian, which describes the dynamics of a distribution of charged particles in an external electromagnetic field. At each extension, the distribution is approximated by a set of moments about the world line of its center of mass and the field by its Taylor series expansion about the same line. The equations of motion after the second extensions contain back-reaction terms of the moments on the world line.

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。

↑