C*-algebras of holonomy-diffeomorphisms & quantum gravity

JOURNAL OF GEOMETRY AND PHYSICS

卷:99

Article

Aastrup, Johannes¹  Grimstrup, Jesper Moller¹ 

[1] Leibniz Univ Hannover, Inst Anal, Welfengarten 1, D-30167 Hannover, Germany

关键词: Noncommutative geometry;    Quantum gravity;    Ashtekar variables;   

DOI  :  10.1016/j.geomphys.2015.09.007

来源: Elsevier

【 摘 要 】

We introduce the holonomy-diffeomorphism algebra, a C*-algebra generated by flows of vector fields and the compactly supported smooth functions on a manifold. We show that the separable representations of the holonomy-diffeomorphism algebra are given by measurable connections, and that the unitary equivalence of the representations corresponds to measured gauge equivalence of the measurable connections. We compare the setup to Loop Quantum Gravity and show that the generalized connections found there are not contained in the spectrum of the holonomy-diffeomorphism algebra in dimensions higher than one. This is the second paper of two, where the prequel gives an exposition of a framework of quantum gravity based on the holonomy-diffeomorphism algebra. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free