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arXiv 2211.03326math-phmath.MP
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具有稀疏周期势的一维离散薛定谔算子判别式的扰动

Perturbation of discriminant for one-dimensional discrete Schrödinger operator with sparse periodic potential

Masahiro Kaminaga

摘要:

本文研究了具有复值稀疏周期势的一维离散薛定谔算子。复值周期势的谱是复平面上由判别式确定的代数曲线的实交点表示的复杂紧集。我们用切比雪夫多项式表示判别式,并利用判别式的扰动来研究谱。

英文摘要:

We consider the one-dimensional discrete Schrödinger operator with complex-valued sparse periodic potential. The spectrum for a complex-valued periodic potential is a complicated compact set in the complex plane represented by real intersections of algebraic curves determined by a discriminant. We represent the discriminant by Chebyshev polynomials and use perturbations of the discriminant to study the spectrum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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