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Stability and Spontaneous Oscillation of Two-Component Matter Wave Solitons with Linear Interconversion
並列摘要
By using the variational approach, the evolution characteristics of two coupled matter wave bright solitons with linear interconversion have been analytically investigated when the s-wave scattering length is spatially modulated. The results show that there exist stable solitons and spontaneous oscillation in the condensates under variant conditions. The stable regions are different for symmetric and antisymmetric solitons. The stability of the two stationary states is related to the external trapping potential, the spatially modulated nonlinearity, the number of atoms, and the coupled terms. Moreover, we also find that the spatially modulated nonlinearity influences both the solitons and the spontaneous oscillation of the atoms in the two linearly coupled condensates. The validity of the theoretical predictions is confirmed by numerical simulation of the coupled equations.
並列關鍵字
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