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arXiv 2408.13342gr-qcmath-phmath.DGmath.MP
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球对称下的远平行几何:对角标架与正规标架

Teleparallel Geometry with Spherical Symmetry: The diagonal and proper frames

Robert J. van den Hoogen, Hudson X. Forance

AI总结:

本文为球对称远平行引力构造了对角与正规余标架及其自旋联络,论证了对角标架在 f(T) 场方程中的优势,并在 Kantowski-Sachs 对称性下求得若干解。

摘要:

我们给出了球对称几何的正规余标架及其对应的(对角)余标架/自旋联络对,该结果可作为任何远平行引力理论的初始拟设。实现从一个余标架到另一个余标架变换的洛伦兹变换也以因式分解形式给出。该因式分解形式还说明了自旋联络中两个自由度的性质。文中还给出了通过坐标选择来限制任意函数个数的方法。我们从利用度量仿射规范理论方法对远平行引力进行全面阐述开始,并集中于 f(T) 远平行引力,在对角余标架中表达场方程。我们认为,与正规余标架选择相比,选择对角余标架可能更为有利。最后,在假设一个额外对称性的条件下,我们限定于 Kantowski-Sachs 远平行几何,并确定了一些解。

英文摘要:

We present the proper co-frame and its corresponding (diagonal) co-frame/spin connection pair for spherically symmetric geometries which can be used as an initial ansatz in any theory of teleparallel gravity. The Lorentz transformation facilitating the move from one co-frame to the other is also presented in factored form. The factored form also illustrates the nature of the two degrees of freedom found in the spin connection. The choice of coordinates in restricting the number of arbitrary functions is also presented. Beginning with a thorough presentation of teleparallel gravity using the metric affine gauge theory approach and concentrating on f(T) teleparallel gravity, we express the field equations in the diagonal co-frame. We argue that the choice of diagonal co-frame may be more advantageous over the proper co-frame choice. Finally, assuming one additional symmetry, we restrict ourselves to the Kantowski-Sachs tele-parallel geometries, and determine some solutions.

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。

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