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We investigate the interactions between components of various vector solitons in Bos-Einstein condensates by means of the least action principle, and derive the effective potentials for different vector solitons, which indicate that the interactions are of short range, and may be repulsive or attractive decided by the different intra- and inter-species interactions in such a system. In the case of attraction, the two solitons will oscillate about and pass through each other around the equilibrium state. The comparison of analytical results with mumertical simulation is presented. 相似文献
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汽车急速停启时的稳定性潘留仙（湖南益阳师专）对行驶的汽车进行受力分析，及对汽车牵引力的讨论，已有多文探讨。本文不再论述。现只就汽车行驶中急速停、启中的问题进行探讨。对于汽车行驶中的稳定性问题，人们一般都很少考虑它的这一运动的特殊性及有关因素，而仅仅把... 相似文献
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We have obtained the parameter-phase diagram, which unambiguously defines the parameter region for the use of InAs/GaAs quantum
dot as two-level quantum system in quantum computation in the framework of the effective-mass envelope function theory. Moreover,
static electric field is found to efficiently prolong decoherence time. As a result, decoherence time may reach the order
of magnitude of milli-seconds as external static electric field goes beyond 20 kV/cm if only vacuum fluctuation is taken as
the main source for decoherence. Our calculated results are useful for guiding the solid-state implementation of quantum computing. 相似文献
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影响干涉条纹可见度的几个主要因素 总被引：3，自引：0，他引：3
影响干涉条纹可见度的几个主要因素潘留仙，徐勇（湖南益阳师专）（西南交通大学成都）两个或两个以上光波场在空间相遇后是否能产生干涉？干涉程度如何？通常最直观判别的办法就是考察它们相遇后有无干涉条纹和干涉条纹的清晰程度。由于干涉条纹的清晰程度直接反映了光波... 相似文献
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The authors develop a direct approach to the soliton perturbation based on theseparation of variables. With the aid of approach, the first-order effects of perturbation ona KdV-MKdV soliton are derived, both the slow time-dependence of the soliton parametersand the first-order correction are obtained. 相似文献
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