摘要
“分而治之”是处理复杂分子势能面的一种快速简洁方案。本文介绍了近年来本课题组在这一领域的方法研究进展及相关应用研究。在新的组装势能面算法和数据库支持下,我们将复杂大分子势能面计算量降低到O(N1~2)次方的标度,并且计算精度接近DFT甚至CCSD(T)的水平。采用该方法,我们对两个不同的应用场景进行了测试。结果表明,高性能的组装势能面可以完成以往难以实现的大规模的分子结构搜索、稳定性分析以及新型分子结构设计等关键性任务。
The“divide and conquer”approach is a fast and concise solution for complex molecular potential energy surfaces(PES).In this paper,we present the progress of our group’s research in this area and the related applications.With the support of new algorithm and database for assembling PES,the computation cost is reduced to the scale of O(N1~2).And the accuracy is close to the level of DFT or even CCSD(T).Using this method,we have tested it for two different scenarios.The results show that it can perform critical tasks such as large-scale molecular structure search,stability analysis,and new molecular structure design.
作者
宋国梁
李振华
SONG Guoliang;LI Zhenhua(Department of Chemistry,Fudan University,Shanghai 200438,China)
出处
《复旦学报(自然科学版)》
CAS
CSCD
北大核心
2023年第1期16-24,I0002,30,共11页
Journal of Fudan University:Natural Science
基金
国家自然科学基金(21873019,22173021)。
关键词
分而治之
复杂分子体系
势能函数
势能面
divide and conquer
complex molecular system
potential energy funetion
potential energy surface