arXivDaily arXiv每日学术速递 周一至周五更新
arXiv physics/9702030math-phmath.MP
收藏

齐次相空间:Cayley-Klein框架

Homogeneous phase spaces: the Cayley-Klein framework

Francisco J. Herranz, Mariano Santander

摘要:

与实伪正交群SO(p,q)相关的秩为1和秩为2的齐性空间的度量结构以及它们的一些压缩(例如,ISO(p,q),Newton-Hooke type groups.)研究了所有这些空间描述从一个统一的设置以下凯莱-克莱因计划允许同时研究的主要特点,他们的黎曼,伪黎曼和semiRiemann度量,以及他们的曲率。有些一阶空间自然被解释为时空模型。同样地,对于二阶空间的自然解释与一阶空间中的直线空间相同;通过这种关系,这些二阶空间产生了齐次相空间模型。分析了齐次时空相空间的主要特征。

英文摘要:

The metric structure of homogeneous spaces of rank-one and rank-two associated to the real pseudo-orthogonal groups SO(p,q) and some of their contractions (e.g., ISO(p,q), Newton-Hooke type groups...) is studied. All these spaces are described from a unified setting following a Cayley-Klein scheme allowing to simultaneously study the main features of their Riemannian, pesudoRiemannian and semiRiemannian metrics, as well as of their curvatures. Some of the rank-one spaces are naturally interpreted as spacetime models. Likewise, the same natural interpretation for rank-two spaces is as spaces of lines in rank-one spaces; through this relation these rank-two spaces give rise to homogeneous phase space models. The main features of the phase spaces for homogeneous spacetimes are analysed.

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。

↑