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arXiv 1104.0593math-phmath.MP
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具有偶复值多项式位势的Schr dinger算子的特征值

On eigenvalues of the Schrödinger operator with an even complex-valued polynomial potential

Per Alexandersson

摘要:

本文推广了A。Eremenko和A.加布里埃洛夫考虑一类具有任意次d的复系数偶多项式位势的薛定谔方程的特征值问题,边界条件k<(d+2)/2.我们表明,在这种情况下,谱行列式由两个组成部分,分别包含偶数和奇数特征值。在k=(d+2)/2的边界条件下,我们证明了相应的参数空间由无穷多个连通分支组成.

英文摘要:

In this paper, we generalize several results of the article "Analytic continuation of eigenvalues of a quartic oscillator" of A. Eremenko and A. Gabrielov. We consider a family of eigenvalue problems for a Schrödinger equation with even polynomial potentials of arbitrary degree d with complex coefficients, and k<(d+2)/2 boundary conditions. We show that the spectral determinant in this case consists of two components, containing even and odd eigenvalues respectively. In the case with k=(d+2)/2 boundary conditions, we show that the corresponding parameter space consists of infinitely many connected components.

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