计算物理 ›› 1992, Vol. 9 ›› Issue (1): 6-14.

• 论文 • 上一篇    下一篇

斯莱特型轨道双中心双电子积分计算方法的优化

李延欣, 董夏兰, 潘守甫   

  1. 吉林大学原子与分子物理研究所, 长春 130023
  • 收稿日期:1990-11-03 修回日期:1991-10-29 出版日期:1992-03-25 发布日期:1992-03-25
  • 基金资助:
    国家教委博士点基金;原子分子数据联合体资助

ON OPTIMIZATION OF ALGORITHMS ABOUT TWO-CENTER TWO-ELECTRON INTEGRALS OVER SLATER TYPE ORBITALS

Li Yanxi, Dong Xialan, Pan Shoufu   

  1. Institution of Atomic and Molecular Physics, Jilin University, Changchun 130023
  • Received:1990-11-03 Revised:1991-10-29 Online:1992-03-25 Published:1992-03-25

摘要: 本文讨论了复型斯莱特轨道(STO)对双中心库仑积分、混合积分和交换积分计算公式的优化。通过对上述公式结构的分析、以及对其涉及到的辅助函数的误差分析,得到了实现精度与速度最佳平衡的部分近似条件。

关键词: 复型斯莱特轨道, 双中心双电子积分, 精度与速度之间的最优平衡, 高精度, 计算, 辅助函数, 数值稳定性, 误差分析, 算法优化

Abstract: The formulae of two-electron integrals are optimized by using complex Slater orbitals. Analysing both the formula structure and the instability of auxiliary functions, we obtain some approximate conditions of realizing the best balance between the required accuracy and the computational speed.

Key words: two-center two-electron integrals, the best balance between required accuracy and speed, complex Slater orbital, high accuracy calculation, auxiliary functions, optimization of algrithm, analysis of error