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arXiv 2602.01336math.AP
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周期度量图上非线性薛定谔方程带混合非线性的基态研究

Ground states for the NLS equation with combined nonlinearity on periodic metric graphs

Nicola Soave, Lorenzo Villata

AI总结:

研究周期度量图上非线性薛定谔方程带混合非线性的基态存在性,扩展了同质NLS方程在正方形和蜂窝网格上的结果,并改进了非紧致图上的相关研究。

摘要:

我们研究了在1和2周期度量图上非线性薛定谔能量方程带指定质量的基态存在性。这可以看作是对之前研究的自然延续,一方面是对周期图上同质NLS方程的研究,另一方面是对非紧致度量图上带混合非线性的NLS方程的研究。在后者情况下,不同非线性之间的相互作用导致了与同质设定不同的新现象;特别是在2周期图中,所谓的维度交叉现象出现。作为副产品,我们扩展了在正方形和蜂窝网格上同质NLS方程的现有结果到一般的2周期图。此外,我们还改进了在非紧致图上有限顶点和边的非同质NLS方程的先前结果。

英文摘要:

We investigate the existence of ground states with prescribed mass for the Non-Linear Schrödinger energy with combined nonlinearities on $1$ and $2$-periodic metric graphs. This is the natural prosecution of previous studies concerning on the one hand the homogeneous NLS equation on periodic graphs, and on the other hand the NLS equation with combined nonlinearity on noncompact metric graphs with finitely many vertexes and edges. As in the latter case, it turns out that the interplay between different nonlinearities creates new phenomena with respect to the homogenous setting, but, due to the periodicity, in a quite different way; in particular, for $2$-periodic graphs, the so called dimensional crossover occurs. As a by-product, we extend existing results for the homogeneous NLS on the square and honeycomb grids to general $2$-periodic graphs. Furthermore, we also improve previous results obtained for the inhomogeneous NLS on noncompact graphs with finitely many vertexes and edges.

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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