Matrix eigenvalue model: Feynman graph technique for all genera
Leonid Chekhov, Bertrand Eynard
Abstract
We present the diagrammatic technique for calculating the free energy of the matrix eigenvalue model (the model with arbitrary power β by the Vandermonde determinant) to all orders of 1/N expansion in the case where the limiting eigenvalue distribution spans arbitrary (but fixed) number of disjoint intervals (curves).
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