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arXiv 1504.01065gr-qchep-lathep-th
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CDT量子引力中的威尔逊圈

Wilson loops in CDT quantum gravity

J. Ambjorn, A. Goerlich, J. Jurkiewicz, R. Loll

摘要:

通过显式构造,我们证明了在基于(因果)动力学三角剖分的非微扰量子引力格点公式中,可以简单地引入和度量引力完整性和威尔逊圈.我们利用这个方法研究了一类与量子引力耦合的点粒子的世界线相关联的Wilson线观测量,并从它们的期望值出发,推导出其下的完整性一致地覆盖SO(4)的群流形

英文摘要:

By explicit construction, we show that one can in a simple way introduce and measure gravitational holonomies and Wilson loops in lattice formulations of nonperturbative quantum gravity based on (Causal) Dynamical Triangulations. We use this set-up to investigate a class of Wilson line observables associated with the world line of a point particle coupled to quantum gravity, and deduce from their expectation values that the underlying holonomies cover the group manifold of SO(4) uniformly

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