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19912026
Showing 2008 · math-phShow all

17 papers · 2 filters

math-ph2008★ 91 cited

Superintegrability with third order integrals of motion, cubic algebras and supersymmetric quantum mechanics II:Painleve transcendent potentials

Ian Marquette

We consider a superintegrable quantum potential in two-dimensional Euclidean space with a second and a third order integral of motion. The potential is written in terms of the four…

math-ph2008★ 7 cited

Superharmonic Perturbations of a Gaussian Measure, Equilibrium Measures and Orthogonal Polynomials

F. Balogh, J. Harnad

This work concerns superharmonic perturbations of a Gaussian measure given by a special class of positive weights in the complex plane of the form , w…

math-ph2008★ 9 cited

Elliptic solutions of isentropic ideal compressible fluid flow in (3+1) dimensions

R. Conte, A. M. Grundland, B. Huard

A modified version of the conditional symmetry method, together with the classical method, is used to obtain new classes of elliptic solutions of the isentropic ideal compressible…

math-ph2008

Counting open nodal lines of random waves on planar domains

John A. Toth, Igor Wigman

We compute the asymptotic expectation of the number of {\em open} nodal lines for random waves on smooth planar domains. We find that for both the long energy window and th…

math-ph2008★ 44 cited

Topological expansion of the Bethe ansatz, and non-commutative algebraic geometry

Bertrand Eynard, Olivier Marchal

In this article, we define a non-commutative deformation of the "symplectic invariants" of an algebraic hyperelliptical plane curve. The necessary condition for our definition to m…

math-ph2008★ 1 cited

N=2 supersymmetric extension of a hydrodynamic system in Riemann invariants

A. M. Grundland, A. J. Hariton

In this paper, we formulate an N=2 supersymmetric extension of a hydrodynamic-type system involving Riemann invariants. The supersymmetric version is constructed by means of a supe…

math-ph2008★ 24 cited

All solvable extensions of a class of nilpotent Lie algebras of dimension n and degree of nilpotency n-1

Libor Snobl, Pavel Winternitz

We construct all solvable Lie algebras with a specific n-dimensional nilradical n_(n,2) (of degree of nilpotency (n-1) and with an (n-2)-dimensional maximal Abelian ideal). We find…

math-ph2008★ 5 cited

Computing with almost periodic functions

R. V. Moody, M. Nesterenko, J. Patera

The paper develops a method for discrete computational Fourier analysis of functions defined on quasicrystals and other almost periodic sets. A key point is to build the analysis a…

math-ph2008★ 77 cited

Superintegrability with third order integrals of motion, cubic algebras and supersymmetric quantum mechanics I:Rational function potentials

Ian Marquette

We consider a superintegrable Hamiltonian system in a two-dimensional space with a scalar potential that allows one quadratic and one cubic integral of motion. We construct the mos…

math-ph2008★ 76 cited

Reduction of superintegrable systems: the anisotropic harmonic oscillator

Miguel A. Rodriguez, Piergiulio Tempesta, Pavel Winternitz

We introduce a new 2N--parametric family of maximally superintegrable systems in N dimensions, obtained as a reduction of an anisotropic harmonic oscillator in a 2N--dimensional co…

math-ph2008★ 8 cited

Three dimensional C-, S- and E-transforms

M. Nesterenko, J. Patera

Three dimensional continuous and discrete Fourier-like transforms, based on the three simple and four semisimple compact Lie groups of rank 3, are presented. For each simple Lie gr…

math-ph2008★ 27 cited

On the distribution of the nodal sets of random spherical harmonics

Igor Wigman

We study the length of the nodal set of eigenfunctions of the Laplacian on the $\spheredim$-dimensional sphere. It is well known that the eigenspaces corresponding to $\eigval=n(n+…

math-ph2008★ 12 cited

Topological expansion of the chain of matrices

Bertrand Eynard, Aleix Prats Ferrer

We solve the loop equations to all orders in , for the Chain of Matrices matrix model (with possibly an external field coupled to the last matrix of the chain). We show that…

math-ph2008★ 78 cited

The Cauchy two-matrix model

M. Bertola, M. Gekhtman, J. Szmigielski

We introduce a new class of two(multi)-matrix models of positive Hermitean matrices coupled in a chain; the coupling is related to the Cauchy kernel and differs from the exponentia…

math-ph2008

First colonization of a hard-edge in random matrix theory

M. Bertola, S. Y. Lee

We describe the spectral statistics of the first finite number of eigenvalues in a newly-forming band on the hard-edge of the spectrum of a random Hermitean matrix model. It is fou…

math-ph2008★ 2 cited

Regularity of a vector potential problem and its spectral curve

F. Balogh, M. Bertola

In this note we study a minimization problem for a vector of measures subject to a prescribed interaction matrix in the presence of external potentials. The conductors are allowed…

math-ph2008★ 9 cited

Supersymmetric version of a hydrodynamic system in Riemann invariants and its solutions

A. M. Grundland, A. J. Hariton

In this paper, a supersymmetric extension of a system of hydrodynamic type equations involving Riemann invariants is formulated in terms of a superspace and superfield formalism. T…