Z-measures on partitions and their scaling limits

Details Z-measures on partitions and their scaling limits Z-measures on partitions and their scaling limits

2002-10-28

arxiv.org/abs/math-ph/0210048v1

European J. Combin. 26 (2005), no. 6, 795--834

Physics

Mathematical Physics

AMSTeX, 37 pages

Scientific paper

We study certain probability measures on partitions of n=1,2,..., originated in representation theory, and demonstrate their connections with random matrix theory and multivariate hypergeometric functions. Our measures depend on three parameters including an analog of the beta parameter in random matrix models. Under an appropriate limit transition as n goes to infinity, our measures converge to certain limit measures, which are of the same nature as one-dimensional log-gas with arbitrary beta>0. The first main result says that averages of products of ``characteristic polynomials'' with respect to the limit measures are given by the multivariate hypergeometric functions of type (2,0). The second main result is a computation of the limit correlation functions for the even values of beta.

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