可果美晶格中的局部结构
Localized structures in Kagome lattices
摘要：
研究了在离散和连续两种情况下，具有离焦非线性的Kagome晶格中间隙涡旋和多极间隙孤子的存在性和稳定性.特别是，预测的基础上扩展一个简单的和易于分析的反连续（零耦合）的限制。这些预测，然后证实了连续模型的光诱导Kagome晶格在光折变晶体中获得的蜂窝晶格的连续变换。
英文摘要：
We investigate the existence and stability of gap vortices and multi-pole gap solitons in a Kagome lattice with a defocusing nonlinearity both in a discrete case and in a continuum one with periodic external modulation. In particular, predictions are made based on expansion around a simple and analytically tractable anti-continuum (zero coupling) limit. These predictions are then confirmed for a continuum model of an optically-induced Kagome lattice in a photorefractive crystal obtained by a continuous transformation of a honeycomb lattice.
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