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arXiv 1304.2679gr-qchep-thmath-phmath.MP
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全维经典引力和量子引力的新变量V.孤立视界边界自由度

New Variables for Classical and Quantum Gravity in all Dimensions V. Isolated Horizon Boundary Degrees of Freedom

Norbert Bodendorfer, Thomas Thiemann, Andreas Thurn

摘要:

在本文中,我们推广的孤立视界的处理环路量子引力,导致在四维情况下的边界上的陈-西蒙斯理论,在2(n+1)维时空的非扭曲孤立视界。其关键思想是推广四维孤立视界边界条件,通过使用空间切片的黑洞视界的欧拉拓扑密度作为失真的措施。由此得到的视界上的辛结构与高维SO(2(n+1))-Chern-Simons理论在Peldan-type混合连接方面的辛结构一致,并且与3+1维中的通常处理非常相似。我们简单地评论一下视界理论的一种可能的量子化。在这里,由于高维非阿贝尔陈-西蒙斯理论具有局部自由度,因此出现了一些微妙之处。然而,当用一个同样自然的更强的边界条件来代替通常边界条件的高维自然推广时,可以想象,避免了源于局部自由度的问题,从而可能导致有限熵。

英文摘要:

In this paper, we generalise the treatment of isolated horizons in loop quantum gravity, resulting in a Chern-Simons theory on the boundary in the four-dimensional case, to non-distorted isolated horizons in 2(n+1)-dimensional spacetimes. The key idea is to generalise the four-dimensional isolated horizon boundary condition by using the Euler topological density of a spatial slice of the black hole horizon as a measure of distortion. The resulting symplectic structure on the horizon coincides with the one of higher-dimensional SO(2(n+1))-Chern-Simons theory in terms of a Peldan-type hybrid connection and resembles closely the usual treatment in 3+1 dimensions. We comment briefly on a possible quantisation of the horizon theory. Here, some subtleties arise since higher-dimensional non-Abelian Chern-Simons theory has local degrees of freedom. However, when replacing the natural generalisation to higher dimensions of the usual boundary condition by an equally natural stronger one, it is conceivable that the problems originating from the local degrees of freedom are avoided, thus possibly resulting in a finite entropy.

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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