title: Exact soliton solution and inelastic two-soliton collision in a spin chain driven by a time-dependent magnetic field.
abstract: 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.
authors.affiliation: Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006, China.
authors.forename: Zai-Dong
authors.initials: ZD
authors.lastname: Li
authors.forename: Lu
authors.initials: L
authors.lastname: Li
authors.forename: W M
authors.initials: WM
authors.lastname: Liu
authors.forename: Jiu-Qing
authors.initials: JQ
authors.lastname: Liang
authors.forename: T
authors.initials: T
authors.lastname: Ziman