Hermitean matrix model free energy: Feynman graph technique for all genera
Chekhov L. (Steklov Mathematical Institute, ITEP, and LIFR, Moscow, RUSSIA) Eynard B. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE)
Abstract: We present a diagrammatic technique for calculating the free energy of the Hermitian one-matrix model to all orders of 1/N expansion in the case where the limiting eigenvalue distribution spans arbitrary (but fixed) number of disjoint intervals (curves).