论文标题

孤子相互作用和复合耦合短脉冲方程的杨百合图

Soliton interactions and Yang-Baxter maps for the complex coupled short-pulse equation

论文作者

Caudrelier, Vincent, Gkogkou, Aikaterini, Prinari, Barbara

论文摘要

复杂的耦合短脉冲方程(CCSPE)描述了非线性双向纤维中超短光脉冲的传播。该系统接收了各种载体孤子解决方案:基本孤子,基本呼吸器,复合呼吸器(通用或非遗传)以及所谓的自符复合孤子。在这项工作中,我们使用与各种类型的孤子相对应的敷料方法和Darboux矩阵来研究聚焦CCSPE中的孤子相互作用。该研究结合了在某些有理循环基团的发生器上的重构问题,这些发电机的长期渐近学以及对敷料因子的主要重构定理,这些定理导致了重构图和载体soliton相互作用的杨百合特性。在本文获得的结果中,我们为基本孤子的极化移动提供了明确的公式,这是Manakov系统中载体孤子相互作用的众所周知公式的类似物。我们的研究还表明,在与基本的呼吸器互动后,基本的孤子变成了基本的呼吸器,相反,两个基本呼吸器的相互作用一般会产生两个基本呼吸器,具有极化的变化,但也可能导致基本的soliton和soliton和一只基本的呼吸。获得了表征基本呼吸器及其极化向量的系数的显式公式。其他类型的孤子的相互作用也将详细得出和讨论,并用图进行了说明。在此过程中获得了新的Yang-Baxter图。

The complex coupled short pulse equation (ccSPE) describes the propagation of ultra-short optical pulses in nonlinear birefringent fibers. The system admits a variety of vector soliton solutions: fundamental solitons, fundamental breathers, composite breathers (generic or non-generic), as well as so-called self-symmetric composite solitons. In this work, we use the dressing method and the Darboux matrices corresponding to the various types of solitons to investigate soliton interactions in the focusing ccSPE. The study combines refactorization problems on generators of certain rational loop groups, and long-time asymptotics of these generators, as well as the main refactorization theorem for the dressing factors which leads to the Yang-Baxter property for the refactorization map and the vector soliton interactions. Among the results obtained in this paper, we derive explicit formulas for the polarization shift of fundamental solitons which are the analog of the well-known formulas for the interaction of vector solitons in the Manakov system. Our study also reveals that upon interacting with a fundamental breather, a fundamental soliton becomes a fundamental breather and, conversely, that the interaction of two fundamental breathers generically yields two fundamental breathers with a polarization shifts, but may also result into a fundamental soliton and a fundamental breather. Explicit formulas for the coefficients that characterize the fundamental breathers, as well as for their polarization vectors are obtained. The interactions of other types of solitons are also derived and discussed in detail and illustrated with plots. New Yang-Baxter maps are obtained in the process.

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