Correlations in fluctuating geometries
نویسنده
چکیده
Models of fluctuating(or random) geometries provide many challenging problems. One of them is the definition and interpretation of correlation functions. The usual formulation of the correlation function as a correlator of two observables in two fixed points at some distance apart is possible only if we have a fixed system of coordinates and a metric. This may be suitable for the perturbation thery approach. For theories like simplicial gravity, formulated in coordinate independent way, this is impossible. One way to proceed is to sum over all pairs of points with the fixed distance between them:
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