【摘 要】
：
A Bose-Einstein condensate with time varying scattering length in time-dependent harmonic trap is analytically investigated and soliton-like solutions of the Gr
【机 构】
：
Department of Physics, Hunan Normal University, Changsha 410081
论文部分内容阅读
A Bose-Einstein condensate with time varying scattering length in time-dependent harmonic trap is analytically investigated and soliton-like solutions of the Gross-Pitaeviskii equation are obtained to describe single soliton,bisoliton and N-soliton properties of the matter wave. The influences of the geometrical property and modulate frequency of trapping potential on soliton behaviour are discussed. When the trap potential has a very small trap aspect ratio or oscillates with a high frequency, the matter wave preserves its shape nearly like a soliton train in propagation, while the breathing behaviour, which displays the periodic collapse and revival of the matter wave,is found for a relatively large aspect ratio or slow varying potential. Meanwhile mass centre of the matter wave translates and/or oscillates for different trap aspect ratio and trap frequencies.
其他文献
An effect of invariant transformation in one-dimensional randomly perturbed photonic crystals is presented analytically and numerically. According to this effec
The β-NMR (nuclear magnetic resonance) and β-NQR (nuclear quadrupole resonance) technique and its experimental set-up have been developed for the first time i
We consider the transmission of classical information over a quantum channel by many senders, which is a generalization of the two-sender case. The channel capa
We investigate the sheath structure of an electronegative plasma at steady state with the assumptions of cold positive ions and hot negative ions. The modified
By using the algebraic structure in the operator dual space in the master equation for the driven dissipative harmonic oscillator, we have rewritten the master
对一些人而言，他们并不相信太阳拥有大气，但事实的确如此。针对太阳大气温度变化的奇特现象，科学界一直存在争议。科学家一直希望能将航天器送入太阳的外部日冕层，以更好地了解太
Based on an isospin-dependent quantum molecular dynamics model we studied the influence of a medium correction of an isospin-dependent nucleon-nucleon cross sec
Surface-tension driven flow in NaBi(WO4)2 melt is visualized by means of the already proved method of high temperature in situ optical observation. The transiti
一个完整的传播过程程包括传者、受者、讯息、媒介、反馈等要素,大众在强调传者的主体作用的同时,往往也不能忽视受者在传播活动中的主体地位。
A complete process of comm
信息可视化在今天与10年有几个方面的不同。首先,工具的使用更加复杂,数量更多了,软件让记者能做一些他们过去做不到的事情。因此,更多的人能够更容易方便地操作使用大量的数