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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2003.03952gr-qcquant-ph
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全维圈量子引力中的一般几何算符

General geometric operators in all dimensional loop quantum gravity

Gaoping Long, Yongge Ma

摘要:

提出了在全维圈量子引力中构造一般几何算符的两种策略。这些不同的构造主要来自于对去密度化对偶动量的两种不同的正则化方法,它们在空间几何中起着构建模块的作用。第一种正则化方法是标准$(1+3)$ -维圈量子引力中长度算子正则化的推广,而第二种正则化方法是标准(D-1)-面积和D-体积算子正则化方法的自然推广.构造了两种度量任意$m$ -面积的一般几何算子,并讨论和比较了它们的性质。它们是研究任意维量子几何的有价值的候选者。

英文摘要:

Two strategies for constructing general geometric operators in all dimensional loop quantum gravity are proposed. The different constructions are mainly come from the two different regularization methods for the de-densitized dual momentum, which play the role of building block for the spatial geometry. The first regularization method is a generalization of the regularization of the length operator in standard $(1+3)$-dimensional loop quantum gravity, while the second method is a natural extension of those for standard (D-1)-area and D-volume operators. Two versions of general geometric operators to measure arbitrary $m$-areas are constructed, and their properties are discussed and compared. They serve as valuable candidates to study the quantum geometry in arbitrary dimensions.

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