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arXiv 2303.09640math.APmath-phmath.MPmath.SP
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吸引库仑算子特征函数的半经典测度

Semiclassical measures of eigenfunctions of the attractive Coulomb operator

Northwestern University(西北大学)

Nicholas Lohr

AI总结:

本文刻画了吸引库仑算子特征函数序列的半经典测度,证明任何在正则化开普勒流下不变的测度均可实现,方法基于Fock酉映射与稠密性论证。

摘要:

我们刻画了吸引库仑算子$\widehat{H}_{\hbar}:=-\frac{\hbar^2}{2}Δ_{\mathbb{R}^3}-\frac{1}{|x|}$的特征函数序列所对应的半经典测度的集合。特别地,在经典相空间中开普勒哈密顿量$H$的固定负能量超曲面$Σ_E$上,任何在正则化开普勒流下不变的Radon概率测度,都是$\widehat{H}_{\hbar}$在$\hbar \to 0$时特征值$E$的特征函数序列的半经典测度。我们使用的主要工具是著名的Fock酉共轭映射,它将$\widehat{H}_{\hbar}$的特征空间与$-Δ_{\mathbb{S}^3}$的特征空间联系起来。我们首先证明,对于$Σ_E$上的任何开普勒轨道$γ$,存在一个特征函数序列,当$\hbar \to 0$时,在半经典测度的意义下收敛到支撑在$γ$上的delta测度,然后我们利用弱-*拓扑中的稠密性论证来完成证明。

英文摘要:

We characterize the set of semiclassical measures corresponding to sequences of eigenfunctions of the attractive Coulomb operator $\widehat{H}_{\hbar}:=-\frac{\hbar^2}{2}Δ_{\mathbb{R}^3}-\frac{1}{|x|}$. In particular, any Radon probability measure on the fixed negative energy hypersurface $Σ_E$ of the Kepler Hamiltonian $H$ in classical phase space that is invariant under the regularized Kepler flow is the semiclassical measure of a sequence of eigenfunctions of $\widehat{H}_{\hbar}$ with eigenvalue $E$ as $\hbar \to 0$. The main tool that we use is the celebrated Fock unitary conjugation map between eigenspaces of $\widehat{H}_{\hbar}$ and $-Δ_{\mathbb{S}^3}$. We first prove that for any Kepler orbit $γ$ on $Σ_E$, there is a sequence of eigenfunctions that converge in the sense of semiclassical measures to the delta measure supported on $γ$ as $\hbar \to 0$, and we finish using a density argument in the weak-* topology.

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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