Solitonic Diffusion of Wavepackets in One-Dimensional Bose–Einstein Condensates

作     者：Yu Mo Cong Zhang Shiping Feng Shi-Jie Yang 莫宇;张聪;冯世平;杨师杰

作者机构：Department of PhysicsBeijing Normal UniversityBeijing 100875 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2019年第36卷第12期

页      面：1-4页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11774034 and 11734002 

主　　题：process Einstein attractive 

摘      要：Solitonic characteristics are revealed in the diffusion process of a hump or a notch wave packet in a one-dimensional Bose-Einstein *** numerically solving the time-dependent Gross-Pitaevskii equation,we find completely different spreading behavior for attractive or repulsive *** the attractive condensate,a series of bright solitons are continuously generated one after another at the wave front and they nearly stay at the positions where they are generated in the whole diffusion *** contrast,for the repulsive condensate,the initial wave packet splits at the beginning into a series of grey solitons that travel at different *** moving velocity of the grey soliton depends on nonlinear interaction strength,as well as the shape of a particular grey soliton.