,Controlling the motion of solitons in BEC by a weakly periodic potential

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:ahhscyf
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
By developing multiple-scale method combined with Wentzel-Kramer-Brillouin expansion, this paper analytically studies the modulating effect of weakly periodic potential on the dynamical properties of the Bose-Einstein condensates (BEC) trapped in harmonic magnetic traps. A black-grey soliton transition is observed in the BEC trapped in harmonic magnetic potential, due to the weakly periodic potential modulating effect. Meanwhile, it finds that with the slight increase of the weakly periodic potential strength, the velocity of the soliton decreases, while its width firstly decreases then increases, a minimum exists there. These results show that the amplitude, velocity, and width of matter solitons can be effectively managed by means of a weakly periodic potential.
其他文献
胡麻是我国北方地区主要的油料作物,由于富含a-亚麻酸、木酚素,对人体有重要的保健功能。因此开展气象因子对胡麻品质的影响研究对胡麻育种及利用有重要的意义。本论文设计了气象因子对胡麻品质影响的试验、气象因子对胡麻油分积累过程的影响试验、抗氧化酶活性对胡麻品质影响试验,以便了解在不同区域气候条件下胡麻品质形成规律,找到气象因子影响胡麻品质形成的关键时期,明确气象因子对胡麻品质性状的直接作用方式。试验结果
This paper proposes a new method of aperture synthetizing in digital holography based on the principle of holography. In the new method aperture synthetizing is
In this paper a new model for the spread of sexually transmitted diseases (STDs) is presented. The dynamic behaviors of the model on a heterogenous scale-free (
副热带及热带海温异常变化对两类厄尔尼诺事件具有一定影响,定量分析热带及北太平洋关键海区海表温度对两类厄尔尼诺事件(尤其是中太平洋型厄尔尼诺事件)的不同贡献,对完善两
In this paper the first-principles calculations within local spin density approximation(LSDA)+U show that BiFeO3 experiences a mixed phase state with P4mm struc
以蓖麻雌性自交系YC2S及其姊妹两性自交系YC2F为材料,研究了不同性别材料内源乙烯释放率的差异。同时,克隆了与雄花发育相关的RcACS5基因和雌花发育相关的RcHK1基因,并进行了生物信息学和表达分析,主要结果如下:1、各时期茎尖徒手切片观察证明,雌性系YC2S和两性系YC2F在五叶后期至六叶前期,开始进入花原基分化期。2、用气相色谱法测定了雌性系和两性系在不同时期的内源乙烯释放率,结果显示:五