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St. Petersburg Seminar on Representation Theory and Dynamical Systems
June 23, 2010 15:00, St. Petersburg, PDMI, room 311 (nab. r. Fontanki, 27)

Two dimensional gravity in Matrix Model, Topological and Liouville approaches

A. A. Belavin

L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences

The second one is the discrete approach, based on the idea of approximating the fluctuating 2d geometry by an ensemble of planar graphs, so that the continuous theory is recovered in the scaling limit where the planar graphs of very large size dominate. The discrete approach is usually refereed to as the Matrix Models, since technically the ensemble of the graphs is usually generated by the perturbative expansion of the integral over $N\times N$ matrices.