Exact soliton solution and inelastic two-soliton collision in a spin chain driven by a time-dependent magnetic field.
We investigate dynamics of exact N-soliton trains in a spin chain driven by a time-dependent magnetic field by means of an inverse scattering transformation. The one-soliton solution indicates obviously the spin precession around the magnetic field and periodic shape variation induced by the time-varying field as well. In terms of the general soliton solutions, N-soliton interaction and particularly various two-soliton collisions are analyzed. The inelastic collision by which we mean the soliton shape change before and after collision appears is generally due to the time-varying field. We, moreover, show that complete inelastic collisions can be achieved by adjusting spectrum and field parameters. This may lead to a potential technique of shape control of soliton.
Li
Zai-Dong
ZD
Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006, China.
Li
Lu
L
Liu
W M
WM
Liang
Jiu-Qing
JQ
Ziman
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