Parametrization of holonomy-flux phase space in the Hamiltonian formulation of $SO(N)$ gauge field theory with $SO(D+1)$ loop quantum gravity as an exemplification

Abstract

The $SO(N)$ Yang-Mills gauge theory is concerned since it can be used to explore the new theory beyond the standard model of particle physics and the higher dimensional loop quantum gravity. The canonical formulation and loop quantization of $SO(N)$ Yang-Mills theory suggest a discrete $SO(N)$ holonomy-flux phase space, and the properties of the critical quantum algebras in the loop quantized $SO(N)$ Yang-Mills theory are encoded in the symplectic structure of this $SO(N)$ holonomy-flux phase space. With the $SO(D+1)$ loop quantum gravity as an exemplification of loop quantized $SO(N)$ Yang-Mills gauge theory, we introduce a new parametrization of the $SO(D+1)$ holonomy-flux phase space in this paper. Moreover, the symplectic structure of the $SO(D+1)$ holonomy-flux phase space are analyzed in terms of the parametrization variables. Comparing to the Poisson algebras among the $SO(D+1)$ holonomy-flux variables, it is shown that the Poisson algebras among the parametrization variables take a clearer formulation, i.e., the Lie algebras of $so(D+1)$ and the Poisson algebras between angle-length pairs.