用演化算法计算磁场B≤10^9G中二电子体系的基态能  

USING EVOLUTIONARY ALGORITHM FOR CALCULATING THE GROUND-STATE ENERGY OF DOUBLE-ELECTRON SYSTEM IN A UNIFORM MAGNETIC FIELD BELOW 10~9?G

作　　者：刘莲君[1] 徐静雯[2] 赵力 毛有东[1] 李元香[2] 

机构地区：[1]武汉大学物理系,武汉430072 [2]武汉大学软件工程国家重点实验室,武汉430072

出　　处：《物理学报》2000年第2期220-225,共6页Acta Physica Sinica

基　　金：中国科学院武汉物理研究所波谱与原子分子物理国家重点实验室开放基金!(批准号 :9815 10 )资助的课题

摘　　要：精确地计算磁场中二电子体系的基态能量是非常复杂和困难的,利用MCI方法和演化算法获得了高精度的结果,并进一步讨论了磁场对体系基态能的影响,也探讨了直接利用演化算法进行变分计算的可能性,结果表明演化算法与其他的优化算法相比,能更有效地用于基态能量的计算。It is very difficult to calculate accurate ground\|state energies of double\|electron systems in a uniform magnetic field. By using the modified configuration\|interaction method and the evolutionary algorithm we obtained highly accurate results. The discussion of the role of magnetic field in the ground state energy of a double\|electron system and the possibility of variational ground\|state\|energy calculation by directly using evolutionary algorithm is presented. The results show that compared with other algorithms such as simplex method, evolutionary algorithm is more efficient in calculating atomic energies, and can be used in other fields of Physics.

关 键 词：二电子体系 演化算法 磁场 基态能 

分 类 号：O413[理学—理论物理]