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arXiv 0710.2791nlin.PS
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晶格孤子的漂移不稳定性和隧穿

Drift instability and tunneling of lattice solitons

Y. Sivan, G. Fibich, B. Ilan

摘要:

本文导出了一般非均匀非线性介质中孤子横向动力学的解析公式,并证明了它在几十个衍射长度范围内都是有效的。特别是,我们表明,孤立子中心在一个晶格的最大值可以是“数学上不稳定”,但“物理上稳定”。我们还推导出一个解析上限的临界速度隧穿,这是有效的,即使当标准的Peierls-Nabarro潜在的方法失败。

英文摘要:

We derive an analytic formula for the lateral dynamics of solitons in a general inhomogeneous nonlinear media, and show that it can be valid over tens of diffraction lengths. In particular, we show that solitons centered at a lattice maximum can be ``mathematically unstable'' but ``physically stable''. We also derive an analytic upper bound for the critical velocity for tunneling, which is valid even when the standard Peierls-Nabarro potential approach fails.

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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