Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2002-09-30
Nonlinear Sciences
Exactly Solvable and Integrable Systems
Latex, 14 pages, no figures
Scientific paper
We generalize Harish-Chandra-Itzykson-Zuber and certain other integrals
(Gross-Witten integral and integrals over complex matrices) using the notion of
tau function of matrix argument. In this case one can reduce the matrix
integral to the integral over eigenvalues, which in turn is certain tau
function. We also consider a generalization of the Kontsevich integral.
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