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arXiv 0907.4325gr-qc
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Regge演算的新视角

Regge calculus from a new angle

Benjamin Bahr, Bianca Dittrich

摘要:

在Regge演算中,时空通常近似于平面单形的三角剖分。我们提出了一个配方,使用简单的恒定截面曲率调整存在的宇宙学常数。正如我们将展示的,这样的公式允许用3d或4d二面角作为基本变量来替换长度变量。此外,我们将引入一阶公式,这与使用平坦单纯形相反,不需要任何约束。这些考虑对于构造具有宇宙学常数的量子引力模型是有用的。

英文摘要:

In Regge calculus space time is usually approximated by a triangulation with flat simplices. We present a formulation using simplices with constant sectional curvature adjusted to the presence of a cosmological constant. As we will show such a formulation allows to replace the length variables by 3d or 4d dihedral angles as basic variables. Moreover we will introduce a first order formulation, which in contrast to using flat simplices, does not require any constraints. These considerations could be useful for the construction of quantum gravity models with a cosmological constant.

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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