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arXiv 0707.2869math-phmath.MPmath.RT
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Clifford代数与可能的Kinetics

Clifford Algebras and Possible Kinematics

Alan McRae

摘要:

我们回顾了巴克里和列维-勒布隆德关于二维时空可能的运动学的工作,以及九种二维凯莱-克莱因几何,说明了凯莱-克莱因几何是如何为除了一个运动学群之外的所有运动学群提供齐次时空的。然后,我们构建了一个双参数的克利福德代数,给出了一个统一的框架,代表李代数以及运动群,这些群体是真正的旋转群。此外,我们给这些时空的共形模型。

英文摘要:

We review Bacry and Levy-Leblond's work on possible kinematics as applied to 2-dimensional spacetimes, as well as the nine types of 2-dimensional Cayley-Klein geometries, illustrating how the Cayley-Klein geometries give homogeneous spacetimes for all but one of the kinematical groups. We then construct a two-parameter family of Clifford algebras that give a unified framework for representing both the Lie algebras as well as the kinematical groups, showing that these groups are true rotation groups. In addition we give conformal models for these spacetimes.

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