Abstract
We formulate a local renormalization flow using Connes' non-commutative geometry. This formulation allows a geometric description of the renormalization flow, and an intrinsic characterization of the operator product expansion. We define spaces for string theory, in terms of a ring of correlation functions and a renormalization flow on this ring, which are the analogues of the category of Riemannian manifolds with metric for general relativity. The beta function is related to a differential form of relative entropy between two renormalization flow trajectories.
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Communicated by L. Alvarez-Gaumé
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Periwal, V. The renormalization flow, spaces of two-dimensional field theories, and Connes' geometry. Commun.Math. Phys. 120, 71–95 (1988). https://doi.org/10.1007/BF01223206
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DOI: https://doi.org/10.1007/BF01223206