General geometric operators in all dimensional loop quantum gravity
Gaoping Long, Yongge Ma
Abstract
Two strategies for constructing general geometric operators in all dimensional loop quantum gravity are proposed. The different constructions mainly come from the two different regularization methods for the basic building blocks of 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 ($\mathrm{D}\ensuremath{-}1$)-area and usual 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.