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arXiv 1109.0168math-phmath.MPmath.SPquant-ph
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一类具有无穷相空间和下无界位势的Schrödinger算子的谱估计

Spectral estimates for a class of Schrödinger operators with infinite phase space and potential unbounded from below

Pavel Exner, Diana Barseghyan

摘要:

我们分析了具有势$|xy|^p - λ(x^2+y^2)^{p/(p+2)}$的二维薛定谔算子,其中$p\ge 1$和$λ\ge 0$。我们发现,有一个临界值的$λ$,使$λ<λ_\mathrm{crit}$的频谱是低于有界和纯离散的,而$λ>λ_\mathrm{crit}$,它是从下面无界。在亚临界的情况下,我们证明了上界和下界的特征值和。

英文摘要:

We analyze two-dimensional Schrödinger operators with the potential $|xy|^p - λ(x^2+y^2)^{p/(p+2)}$ where $p\ge 1$ and $λ\ge 0$. We show that there is a critical value of $λ$ such that the spectrum for $λ<λ_\mathrm{crit}$ is below bounded and purely discrete, while for $λ>λ_\mathrm{crit}$ it is unbounded from below. In the subcritical case we prove upper and lower bounds for the eigenvalue sums.

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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