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

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

2011-04-04

arxiv.org/abs/1104.0593v1

Physics

Mathematical Physics

Scientific paper

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 Schr\"odinger 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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