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Scaling and the Fractal Geometry of Two-Dimensional Quantum Gravity

S. Catterall, G. Thorleifsson, M. Bowick, V. John

hep-latarXiv:hep-lat/9504009

Abstract

We examine the scaling of geodesic correlation functions in two-dimensional gravity and in spin systems coupled to gravity. The numerical data support the scaling hypothesis and indicate that the quantum geometry develops a non-perturbative length scale. The existence of this length scale allows us to extract a Hausdorff dimension. In the case of pure gravity we find dH approx. 3.8, in support of recent theoretical calculations that dH = 4. We also discuss the back-reaction of matter on the geometry.

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