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arXiv 1909.11533math.APmath-phmath.CAmath.MP
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度量图上临界NLS能量的无基态局部极小元

Local minimizers in absence of ground states for the critical NLS energy on metric graphs

Dario Pierotti, Nicola Soave, Gianmaria Verzini

摘要:

考虑非紧度规图上的质量临界非线性薛定谔方程。阿达米、塞拉和蒂利在arXiv:1605.07666中提供了基态结构的一个相当完整的描述,它对应于质量约束下能量泛函的全局最小值,其中证明了基态的存在和性质以关键的方式依赖于质量的值和底层图的拓扑性质。在本文中,我们解决的情况下,基态不存在,并表明,在适当的假设下,受约束的局部极小的能量确实存在。这一结果为在未达到基态能级的情况下依赖于时间的方程中存在稳定解铺平了道路。

英文摘要:

We consider the mass-critical nonlinear Schrödinger equation on non-compact metric graphs. A quite complete description of the structure of the ground states, which correspond to global minimizers of the energy functional under a mass constraint, is provided by Adami, Serra and Tilli in arXiv:1605.07666, where it is proved that existence and properties of ground states depend in a crucial way on both the value of the mass, and the topological properties of the underlying graph. In this paper we address cases when ground states do not exist and show that, under suitable assumptions, constrained local minimizers of the energy do exist. This result paves the way to the existence of stable solutions in the time-dependent equation in cases where the ground state energy level is not achieved.

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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