Collisional dynamics of symmetric two-dimensional quantum droplets

作     者：Yanming Hu Yifan Fei Xiao-Long Chen Yunbo Zhang Yanming Hu;Yifan Fei;Xiao-Long Chen;Yunbo Zhang

作者机构：Institute of Theoretical Physics and State Key Laboratory of Quantum Optics and Quantum Optics DevicesShanxi UniversityTaiyuan 030006China Department of Physics and Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2022年第17卷第6期

页      面：203-209页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.12074340) the Science Foundation of Zhejiang Sci-Tech University(ZSTU)under Grant Nos.20062098-Y and 21062339-Y 

主　　题：ultracold atoms quantum droplets collisions 

摘      要：The collisional dynamics of two symmetric droplets with equal intraspecies scattering lengths and particle number density for each component is studied by solving the corresponding extended Gross–Pitaevskii equation in two dimensions by including a logarithmic correction term in the usual contact *** find the merging droplet after collision experiences a quadrupole oscillation in its shape and the oscillation period is found to be independent of the incidental momentum for small *** increasing collision momentum the colliding droplets may separate into two,or even more,and finally into small pieces of *** these dynamical phases we manage to present boundaries determined by the remnant particle number in the central area and the damped oscillation of the quadrupole mode.A stability peak for the existence of droplets emerges at the critical particle number Nc≃48 for the quasi-Gaussian and flat-top shapes of the droplets.