Phase Separation of Two Species Bose-Einstein Condensates with Different Atomic Masses

• Main Authors: Kung-Jung Lee, 李恭榮
• Other Authors: Chi-Yong Lin
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/87710383748577939155

碩士 === 國立東華大學 === 應用物理研究所 === 98 === In the present work, we investigate the ground state configurations for a system of two Bose-Einstein condensates with different atomic masses. We numerically solve the Gross-Pitaevskii equations and find the mean-field solutions of a binary mixture of trapped atomic Bose-Einstein condensates. The numerical simulations show that the differences of masses of the atoms have no significant influence on the boundaries of mixed and separated phases. In the separated phases of parameter space, the larger ratio of atomic masses always leads to “the split-shell/core configuration. It is easier to have symmetric phase-separation, when the ratios of the scattering lengths between two atomic species is larger.