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arXiv 1801.04897nlin.SI
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具有增益/损失项和$N$ -孤子相互作用的Manakov模型:周期势的影响

Manakov model with gain/loss terms and $N$-soliton interactions: Effects of periodic potentials

V. S. Gerdjikov, M. D. Todorov

摘要:

在绝热近似下,利用微扰非线性薛定谔(NLS)方程和Manakov模型,分析了N孤子训练的动力学行为。扰动包括由周期性的外部势,线性和非线性增益/损失项的同时。我们推导了NLS和Manakov模型相应的扰动复Toda链(PCTC)模型。我们发现,孤子相互作用动力学的PCTC模型相比,毫不逊色,原来的扰动NLS和Manakov模型的完整的数值结果。

英文摘要:

We analyze the dynamical behavior of the N-soliton train in the adiabatic approximation of the perturbed nonlinear Schrodinger (NLS) equation and the Manakov model. The perturbations include the simultaneous by a periodic external potential, and linear and nonlinear gain/loss terms. We derive the corresponding perturbed complex Toda chain (PCTC) models for both NLS and Manakov model. We show that the soliton interactions dynamics for the PCTC models compares favorably to full numerical results of the original perturbed NLS and Manakov model.

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