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arXiv 2004.10471math.SPmath-phmath.MP
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不定Laplacian复扰动的精确谱界

Sharp spectral bounds for complex perturbations of the indefinite Laplacian

Jean-Claude Cuenin, Orif O. Ibrogimov

摘要:

我们推导出实数线上不定拉普拉斯算子的复扰动特征值的定量界。我们的研究结果大大改善了现有的结果,即使是真正的价值潜力。对于$L^1$ -势,我们获得了也容纳嵌入本征值的最佳谱封闭,而我们对于$L^p$ -势的结果对所有$p\in[1,\infty)$的扰动算子本征值的虚部产生了尖锐的谱界。结果的清晰度通过明确的例子来证明。

英文摘要:

We derive quantitative bounds for eigenvalues of complex perturbations of the indefinite Laplacian on the real line. Our results substantially improve existing results even for real-valued potentials. For $L^1$-potentials, we obtain optimal spectral enclosures which accommodate also embedded eigenvalues, while our result for $L^p$-potentials yield sharp spectral bounds on the imaginary parts of eigenvalues of the perturbed operator for all $p\in[1,\infty)$. The sharpness of the results are demonstrated by means of explicit examples.

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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