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arXiv 1004.0856math-phmath.MPmath.SPquant-ph
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具有一般耦合条件的量子图的非Weyl渐近性

Non-Weyl asymptotics for quantum graphs with general coupling conditions

E. Brian Davies, Pavel Exner, Jiri Lipovsky

摘要:

受Davies和Pushnitski最近的一个结果的启发,我们研究了顶点具有一般耦合条件的量子图的共振渐近性。我们推导出一个标准的渐近是一个非外尔字符。我们发现,平衡顶点置换不变的耦合的渐近是非外尔只有在基尔霍夫或反基尔霍夫条件的情况下,而对于图没有置换的非外尔行为的许多例子可以构建。此外,我们提出了一个见解,帮助理解是什么使基尔霍夫/反基尔霍夫耦合特别从共振的角度来看。最后,我们证明了一个推广的量子图与非等边权重。

英文摘要:

Inspired by a recent result of Davies and Pushnitski, we study resonance asymptotics of quantum graphs with general coupling conditions at the vertices. We derive a criterion for the asymptotics to be of a non-Weyl character. We show that for balanced vertices with permutation-invariant couplings the asymptotics is non-Weyl only in case of Kirchhoff or anti-Kirchhoff conditions, while for graphs without permutation numerous examples of non-Weyl behaviour can be constructed. Furthermore, we present an insight helping to understand what makes the Kirchhoff/anti-Kirchhoff coupling particular from the resonance point of view. Finally, we demonstrate a generalization to quantum graphs with nonequal edge weights.

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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