Some Analytical Aspects of the Theory of Integrable Systems

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The research project is focused on the analytical aspects of the theory ofintegrable systems related to the Riemann-Hilbert and isomonodromy methods.The problems under consideration include the asymptotic analysis of thecorrelation functions of exactly solvable quantum field and statisticalmechanics models, the investigation of the double scaling limits in the theory of orthogonal polynomials, the analysis of the integrable systems describing the distribution functions of random matrix theory and random permutations, and the global asymptotic analysis of the solutions of integrable differential equations of the Painleve' and KdV types. The theory of integrable systems is an expanding area which plays anincreasingly important role as one of the principal sources of newanalytical and algebraic ideas for many branches of modern mathematics andtheoretical physics. Simultaneously, it provides an efficient analytic toolfor the study of some of the fundamental mathematical models arising in modern nonlinear science and technology. Specifically, the research directions indicated above deal with the mathematical models which form the theoretical basis for the following fields: condensed matter, high energy and plasma physics, nonlinear hydrodynamics, and high-bit rate telecommunication systems. A special attention in the project is given to the analysis of the distributions of random matrix theory which govern statistical properties of the large systems which do not obey the usual laws of classical probability. This kind of systems appears in many different areasof applied science and technology including heavy nuclei, polymer growth, high-dimensional data analysis, and certain percolation processes.