观测光子流体中的二维断坝流和气态孤子相

IF 8.1 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Ludovica Dieli, Davide Pierangeli, Eugenio DelRe, Claudio Conti
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引用次数: 0

摘要

我们报告了在非线性光学晶体中观察到的光子流体的二维(2D)溃坝流。通过精确调节输入波的振幅和相位,我们研究了从一维(1D)到二维非线性动力学的过渡。我们在两个横向空间维度上都观察到了断波现象,其特征时标由输入盒形场的长宽比决定。在正交方向传播的色散冲击波相互作用产生了二维孤子群。根据盒子的大小,我们报告了一个动态阶段的证据,其特点是孤子数量恒定,类似于可积分系统中的一维孤子气体。我们测量了这种气体状阶段的统计特征。我们的发现为研究二维的集体孤子现象铺平了道路,证明了可整性的丧失并不会破坏主导现象学。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Observation of Two-Dimensional Dam Break Flow and a Gaseous Phase of Solitons in a Photon Fluid
We report the observation of a two-dimensional (2D) dam break flow of a photon fluid in a nonlinear optical crystal. By precisely shaping the amplitude and phase of the input wave, we investigate the transition from one-dimensional (1D) to 2D nonlinear dynamics. We observe wave breaking in both transverse spatial dimensions with characteristic timescales determined by the aspect ratio of the input box–shaped field. The interaction of dispersive shock waves propagating in orthogonal directions gives rise to a 2D ensemble of solitons. Depending on the box size, we report the evidence of a dynamic phase characterized by a constant number of solitons, resembling a 1D soliton gas in integrable systems. We measure the statistical features of this gaslike phase. Our findings pave the way to the investigation of collective solitonic phenomena in two dimensions, demonstrating that the loss of integrability does not disrupt the dominant phenomenology.
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来源期刊
Physical review letters
Physical review letters 物理-物理:综合
CiteScore
16.50
自引率
7.00%
发文量
2673
审稿时长
2.2 months
期刊介绍: Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks
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