Stationary multi-kinks in the discrete sine-Gordon equation

Stationary multi-kinks in the discrete sine-Gordon equation
复制标题

离散正弦戈登方程中的稳态多扭结

DOI:
10.1088/1361-6544/ac3f8d
复制
发表时间:
2021
期刊:
影响因子:
1.7
通讯作者:
Aceves, Alejandro
Aceves, Alejandro
中科院分区:
数学2区
文献类型:
--
作者:
Parker, Ross;Kevrekidis, P G;Aceves, Alejandro

文献摘要

参考文献

被引文献

相似文献

作为离散Klein-Gordon模型族的一个典型例子,我们考虑了离散Sine-Gordon方程中静态多扭结结构的存在性和谱稳定性。多扭结是用林氏方法从一系列分离良好的扭结和反扭结解的交替序列中构造的。然后,我们通过将谱问题归结为矩阵方程来定位与这些多扭结解相关的点谱。对于m结构的多扭结,在主扭结的每个本征值附近的点谱中都有m个本征值,并且只要主扭结的谱是虚数的,多扭结的谱也是虚数的。利用主扭结的本征值和相应的本征函数,我们得到了多扭结本征值的解析表达式,这与数值结果非常吻合。我们还对多扭结的扰动进行了数值时间步进实验,并用谱结果解释了这些模拟的结果。
We consider the existence and spectral stability of static multi-kink structures in the discrete sine-Gordon equation, as a representative example of the family of discrete Klein–Gordon models. The multi-kinks are constructed using Lin's method from an alternating sequence of well-separated kink and antikink solutions. We then locate the point spectrum associated with these multi-kink solutions by reducing the spectral problem to a matrix equation. For an m-structure multi-kink, there will be m eigenvalues in the point spectrum near each eigenvalue of the primary kink, and, as long as the spectrum of the primary kink is imaginary, the spectrum of the multi-kink will be as well. We obtain analytic expressions for the eigenvalues of a multi-kink in terms of the eigenvalues and corresponding eigenfunctions of the primary kink, and these are in very good agreement with numerical results. We also perform numerical time-stepping experiments on perturbations of multi-kinks, and the outcomes of these simulations are interpreted using the spectral results.
DOI: 10.1119/1.1975404
发表时间: 1969-01-01
影响因子: 0.9
作者:
SCOTT, AC
通讯作者: SCOTT, AC
DOI: --
发表时间: 2000
期刊:
影响因子: --
作者:
N. Balmforth;R. Craster;P. Kevrekidis
通讯作者: P. Kevrekidis
孤子的有效拉格朗日量
DOI: 10.1016/0550-3213(79)90309-2
发表时间: 1979
期刊: Nuclear Physics
影响因子: --
作者:
N. Manton
通讯作者: N. Manton
晶格扭结动力学
DOI: 10.1016/s0167-2789(00)00047-6
发表时间: 2000
期刊: Physica D: Nonlinear Phenomena
影响因子: --
作者:
P. Kevrekidis;M. Weinstein;M. Weinstein
通讯作者: M. Weinstein
GniCodes - 用于几何数值积分的 Matlab 程序
DOI: 10.1007/978-3-642-55692-0_5
发表时间: 2003
影响因子: 8.6
作者:
E. Hairer;Martin Hairer
通讯作者: Martin Hairer