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arXiv 1404.2012math-phmath.MP
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Toda-Schrödinger对应和正交多项式

Toda-Schrödinger correspondence and orthogonal polynomials

Satoshi Tsujimoto, Alexei Zhedanov

摘要:

已知无限制Toda链等价于正交多项式的Stieltjes函数的Riccati方程。在一定条件下,该Riccati方程可化为薛定谔方程.我们表明,这个条件是等价的Toda链的B型解决方案。我们建立了一些非平凡的后果所产生的Toda-Schrodinger对应。特别是,我们表明,KdV密度可以确定与相应的正交多项式的矩。我们建立了Toda分子的B型解与薛定谔方程的Bargmann势之间的等价性。

英文摘要:

It is known that the unrestricted Toda chain is equivalent to the Riccati equation for the Stieltjes function of the orthogonal polynomials. Under a special condition, this Riccati equation can be reduced to the Schrödinger equation. We show that this condition is equivalent to type B solutions of the Toda chain. We establish some nontrivial consequences arising from this Toda-Schrödinger correspondence. In particular, we show that the KdV densities can be identified with the moments of the corresponding orthogonal polynomials. We establish equivalence between type B solutions of the Toda molecule and the Bargmann potentials of the Schrödinger equation.

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