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arXiv 2008.05775math-phmath.MPnlin.PSnlin.SI
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AB方程的非完整和拟可积变形

Non-holonomic and Quasi-integrable deformations of the AB Equations

Kumar Abhinav, Indranil Mukherjee, Partha Guha

摘要:

第一次得到了耦合方程组的非完整变形和拟可积变形。AB系统模拟地球物理和大气流体运动以及非线性光学中的超短脉冲传播,并作为众所周知的sine-Gordon方程的推广。非完整变形保持可积性受到高阶微分约束,而准AB系统,这是部分偏离可积性,其特征在于由一个无限子集的数量(收费),只有渐近保守的解决方案具有明确的时空宇称性质。特别是本地化的解决方案,这些变形的AB系统,其中一些是定性独特的相应的变形,显示与物理观察到的激发相似。

英文摘要:

For the first time, both non-holonomic and quasi-integrable deformations are obtained for the AB system of coupled equations. The AB system models geophysical and atmospheric fluid motion along with ultra-short pulse propagation in nonlinear optics and serves as a generalization of the well-known sine-Gordon equation. The non-holonomic deformation retains integrability subjected to higher-order differential constraints whereas the quasi-AB system, which is partially deviated from integrability, is characterized by an infinite subset of quantities (charges) that are conserved only asymptotically given the solution possesses definite space-time parity properties. Particular localized solutions to both these deformations of the AB system are obtained, some of which are qualitatively unique to the corresponding deformation, displaying similarities with physically observed excitations.

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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