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arXiv 1105.3703gr-qchep-thmath-phmath.MP
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全维经典引力和量子引力的新变量I。哈密顿分析

New Variables for Classical and Quantum Gravity in all Dimensions I. Hamiltonian Analysis

Norbert Bodendorfer, Thomas Thiemann, Andreas Thurn

摘要:

圈量子引力在很大程度上依赖于广义相对论的连接公式,使得1。连接Poisson与自身和2交换。相应的应变计组是紧凑的。这可以在施加时间标尺时从Palatini或Holst动作开始实现。不幸的是,这种方法仅限于D+1 = 4个时空维度。然而,有趣的弦论和超引力理论需要更高的维度,因此,为了比较这些方法,需要有更高维的超引力圈量子化。在本系列文章中,我们将朝着这一目标迈出第一步。本文首先发展了一个经典的正则平台,用于纯引力扇区的高维连接公式。新的成分是ADM相空间的一个不同的扩展比LQG中使用的,它不需要时间规范,并推广到任何维度D > 1。其结果是一个杨米尔斯理论相空间高斯,空间同构和哈密顿约束,以及一个额外的约束,称为简单性约束。结构群可以选择为SO(1,D)或SO(D+1),后一种选择对于量化的目的是优选的。

英文摘要:

Loop Quantum Gravity heavily relies on a connection formulation of General Relativity such that 1. the connection Poisson commutes with itself and 2. the corresponding gauge group is compact. This can be achieved starting from the Palatini or Holst action when imposing the time gauge. Unfortunately, this method is restricted to D+1 = 4 spacetime dimensions. However, interesting String theories and Supergravity theories require higher dimensions and it would therefore be desirable to have higher dimensional Supergravity loop quantisations at one's disposal in order to compare these approaches. In this series of papers, we take first steps towards this goal. The present first paper develops a classical canonical platform for a higher dimensional connection formulation of the purely gravitational sector. The new ingredient is a different extension of the ADM phase space than the one used in LQG, which does not require the time gauge and which generalises to any dimension D > 1. The result is a Yang-Mills theory phase space subject to Gauss, spatial diffeomorphism and Hamiltonian constraint as well as one additional constraint, called the simplicity constraint. The structure group can be chosen to be SO(1,D) or SO(D+1) and the latter choice is preferred for purposes of quantisation.

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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