Could someone explain to me why we use a gauge-invariant and diffeomorphism-invariant measure on the quantum configuration space? Is it because we want the inner product to be invariant under gauge transformations. What is a gauge-invariant measure anyway?(adsbygoogle = window.adsbygoogle || []).push({});

see

http://arxiv.org/abs/hep-th/9305045

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# Gauge-invariant measure in LQG

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