纯方波非线性薛定谔方程中的参量不稳定性

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Chinese Physics B Pub Date : 2023-12-04 DOI:10.1088/1674-1056/ad11e7

Yun-Hong Zhang, Chong Liu

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引用次数: 0

摘要

研究了四阶色散周期性调制的不可积纯四次非线性Schrödinger方程调制不稳定性的非线性阶段。利用三模截断，我们揭示了参数共振(PR)呼吸子的复递归，其中每个递归与两个振荡周期(PR周期和内振荡周期)相关联。参数不稳定的非线性阶段允许频谱边带和中心模式之间的最大能量交换发生在MI增益带之外。

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Parametric instability in the pure-quartic nonlinear Schrödinger equation

We study the nonlinear stage of modulation instability (MI) in the non-intergrable pure-quartic nonlinear Schrödinger equation where the fourth-order dispersion is modulated periodically. Using the three-mode truncation, we reveal the complex recurrence of parametric resonance (PR) breathers, where each recurrence is associated with two oscillation periods (PR period and internal oscillation period). The nonlinear stage of parametric instability admits the maximum energy exchange between the spectrum sidebands and central mode occurring outside the MI gain band.

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来源期刊

Chinese Physics B 物理-物理：综合

CiteScore

2.80

自引率

23.50%

发文量

15667

审稿时长

2.4 months

期刊介绍： Chinese Physics B is an international journal covering the latest developments and achievements in all branches of physics worldwide (with the exception of nuclear physics and physics of elementary particles and fields, which is covered by Chinese Physics C). It publishes original research papers and rapid communications reflecting creative and innovative achievements across the field of physics, as well as review articles covering important accomplishments in the frontiers of physics. Subject coverage includes: Condensed matter physics and the physics of materials Atomic, molecular and optical physics Statistical, nonlinear and soft matter physics Plasma physics Interdisciplinary physics.