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arXiv 2005.03790math-phmath.MP
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具有Kirchhoff条件的星图的半经典极限

The semiclassical limit on a star-graph with Kirchhoff conditions

Claudio Cacciapuoti, Davide Fermi, Andrea Posilicano

摘要:

本文研究了在顶点满足Hamilton $H_K=-(2m)^{-1}\hbar^2 Δ$和Kirchhoff条件的$n$ -边星图上质量为$m$的量子粒子的动力学。我们描述了支持在一个边缘和接近高斯相干态的初始状态的量子演化的半经典极限。我们通过图上的Liouville算子定义了极限经典动力学,该算子是通过Kre \u ın的自伴算子奇异摄动理论得到的。对于同一类初态,我们研究了耦合$(H_K,H_{D}^{\oplus})$的波算子和散射算子的半经典极限,其中$H_{D}^{\oplus}$是顶点满足Dirichlet条件的自由哈密顿量.

英文摘要:

We consider the dynamics of a quantum particle of mass $m$ on a $n$-edges star-graph with Hamiltonian $H_K=-(2m)^{-1}\hbar^2 Δ$ and Kirchhoff conditions in the vertex. We describe the semiclassical limit of the quantum evolution of an initial state supported on one of the edges and close to a Gaussian coherent state. We define the limiting classical dynamics through a Liouville operator on the graph, obtained by means of Kre\uın's theory of singular perturbations of self-adjoint operators. For the same class of initial states, we study the semiclassical limit of the wave and scattering operators for the couple $(H_K,H_{D}^{\oplus})$, where $H_{D}^{\oplus}$ is the free Hamiltonian with Dirichlet conditions in the vertex.

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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