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
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发表时间:
2021
期刊:
影响因子:
1.7
通讯作者:
Aceves, Alejandro
中科院分区:
文献类型:
--
作者:
Parker, Ross;Kevrekidis, P G;Aceves, Alejandro
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.
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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
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
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
影响因子:
8.6
作者:
E. Hairer;Martin Hairer
通讯作者:
Martin Hairer