物理学报Issue(19)：1-8,8.DOI:10.7498/aps.64.193102
He-He-Ba三原子体系弱束缚态计算∗
Calculations of the binding energies of weakly b ound He-He-Ba molecules
摘要
Abstract
The three-body Schrödinger equation is approximately solved in the hyperspherical coordinates and the binding energies of the three-body weakly bound systems are calculated with the purpose to find if He-He-Ba trimers could exist. Using the special feature of the B-spline function like the flexible and highly localized properties, hypersphercial potentials are obtained by modifying the knots distribution of the B-spline basis of different weakly bound three-atom systems. Employing the best empirical interaction potentials between each pair of particles, we obtain that in the ground state binding energies of the weakly bound typical three-atom systems, the bindings of the molecules, 4He-4He-138Ba, 4He-3He-138Ba and 3He-3He-138Ba are possible. The binding energies of these systems are shown in the order of 1 Kelvin, each system could support only one bound state. These weakly bound molecules can exist only in a very cold environment. To get insight into the geometry of the molecules, the features of the channel functions associated with the hyperspherical potential curves of each system are investigated.关键词
He-He-Ba三体系统/超球坐标/halo态/Efimov态Key words
He-He-Ba trimer/hyperspherical coordinate/halo state/Efimov state引用本文复制引用
勾庆东,李勇..He-He-Ba三原子体系弱束缚态计算∗[J].物理学报,2015,(19):1-8,8.基金项目
国家自然科学基金(批准号:11464020,11164010)资助的课题.@@@@* Project supported by the National Natural Science Foundation of China (Grant Nos.11464020,11164010) （批准号:11464020,11164010）
