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Representation Theory of Analytic Holonomy C* Algebras

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arxiv gr-qc/9311010 v2 pith:7DDURZY3 submitted 1993-11-07 gr-qc alg-geomhep-thmath.AG

Abhay Ashtekar , Jerzy Lewandowski This is my paper · ORCID
classification gr-qcalg-geomhep-thmath.AG
keywords connectionsloopstheorydiffeomorphisminvariantmeasuresspacealgebra
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Integral calculus on the space of gauge equivalent connections is developed. Loops, knots, links and graphs feature prominently in this description. The framework is well--suited for quantization of diffeomorphism invariant theories of connections. The general setting is provided by the abelian C* algebra of functions on the quotient space of connections generated by Wilson loops (i.e., by the traces of holonomies of connections around closed loops). The representation theory of this algebra leads to an interesting and powerful ``duality'' between gauge--equivalence classes of connections and certain equivalence classes of closed loops. In particular, regular measures on (a suitable completion of) connections/gauges are in 1--1 correspondence with certain functions of loops and diffeomorphism invariant measures correspond to (generalized) knot and link invariants. By carrying out a non--linear extension of the theory of cylindrical measures on topological vector spaces, a faithful, diffeomorphism invariant measure is introduced. This measure can be used to define the Hilbert space of quantum states in theories of connections. The Wilson--loop functionals then serve as the configuration operators in the quantum theory.

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