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arXiv 2010.03385nlin.PScond-mat.other
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孤立波在阶梯状非均匀介质中的传播

Solitary wave propagation in media with step-like inhomogeneities

Mariya Lizunova, Oleksandr Gamayun

摘要:

本文研究了具有阶梯状不均匀介质中波的传播问题。我们选择两种不同的协议:(I)物理上对应于两个系统的交界处的耦合常数的阶梯状空间依赖性和(II)对应于猝灭协议的耦合常数的阶梯状时间依赖性。在这两种情况下,我们研究了孤波在$φ^4$和sine-Gordon模型中的传播。由于拓扑保护,孤立波保持其形式。这使我们能够给出关于其最终速度的独立于模型的预测,这可以被解释为“双曲线”斯涅耳定律。

英文摘要:

We consider the wave propagation in media with step-like inhomogeneities. We choose two different protocols: (I) a step-like spatial dependence of the coupling constant that physically corresponds to the junction of two systems and (II) the step-like time-dependence of the coupling constant that corresponds to a quench protocol. In both scenarios, we study the propagation of the solitary wave in $φ^4$ and the sine-Gordon model. Due to topological protection, the solitary wave retains its form. This allows us to give model-independent predictions about its final velocity, which can be interpreted as the "hyperbolic" Snell's law.

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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