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Physical Properties of Quantum Field Theory Measures

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arxiv hep-th/9711139 v2 pith:2EI5D2MF submitted 1997-11-18 hep-th

classification hep-th
keywords measurequantumfieldtheoryconnectionscurvemeasuresmethods
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Well known methods of measure theory on infinite dimensional spaces are used to study physical properties of measures relevant to quantum field theory. The difference of typical configurations of free massive scalar field theories with different masses is studied. We apply the same methods to study the Ashtekar-Lewandowski (AL) measure on spaces of connections. We prove that the diffeomorphism group acts ergodically, with respect to the AL measure, on the Ashtekar-Isham space of quantum connections modulo gauge transformations. We also prove that a typical, with respect to the AL measure, quantum connection restricted to a (piecewise analytic) curve leads to a parallel transport discontinuous at every point of the curve.

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  1. The Polymer representation for the scalar field: A Wigner functional approach

    gr-qc 2019-08 conditional novelty 6.0 of 10

    The polymer Wigner functional for a real scalar field is derived as a weak covariance limit of the Gaussian-measure Wigner functional, reproducing earlier GNS and Fock results.

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