TY - JOUR AU - Martínez Alonso, Luis AU - Medina Reus, Elena PY - 2009 DO - 10.1088/1751-8113/42/20/205204 SN - 1751-8113 UR - https://hdl.handle.net/20.500.14352/44794 T2 - Journal of physics A: Mathematical and theoretical AB - The Riemann-Hilbert problems for multiple orthogonal polynomials of types I and II are used to derive string equations associated with pairs of Lax-Orlov operators. A method for determining the quasiclassical limit of string equations in the phase... LA - eng PB - IOP Publishing Ltd KW - Gaussian random matrices KW - Nonintersecting brownian motions KW - Universal whitham hierarchy KW - External source KW - Models TI - Multiple orthogonal polynomials, string equationsand the large-n limit TY - journal article VL - 42 ER -