30 citations · 41 across the 4 of their papers we have counts for
4 papers
Soliton Propagation through a Disordered System: Statistics of the Transmission Delay
Sergey A. Gredeskul, Stanislav A. Derevyanko, Alexander S. Kovalev +1
We have studied the soliton propagation through a segment containing random point-like scatterers. In the limit of small concentration of scatterers when the mean distance between…
On the internal modes in sine-Gordon chain
Jaroslaw E. Prilepsky, Alexander S. Kovalev
We address the issue of internal modes of a kink of a discrete sine-Gordon equation. The main point of the present study is to elucidate how the antisymmetric internal mode frequen…
Instabilities and Bifurcations of Nonlinear Impurity Modes
Panayotis G. Kevrekidis, Yuri S. Kivshar, Alexander S. Kovalev
We study the structure and stability of nonlinear impurity modes in the discrete nonlinear Schr{ö}dinger equation with a single on-site nonlinear impurity emphasizing the effects o…
Scattering of vortex pairs in 2D easy-plane ferromagnets
A. S. Kovalev, S. Komineas, F. G. Mertens
Vortex-antivortex pairs in 2D easy-plane ferromagnets have characteristics of solitons in two dimensions. We investigate numerically and analytically the dynamics of such vortex pa…