Singularity analysis of fourth-order Moller-Plesset perturbation theory

被引:7
作者
Goodson, David Z. [1 ]
Sergeev, Alexey V. [1 ]
机构
[1] SE Massachusetts Univ, Dept Chem & Biochem, N Dartmouth, MA 02747 USA
关键词
many-body perturbation theory; Moller-Plesset perturbation theory; quadratic summation approximants; asymptotic series; singularity analysis;
D O I
10.1016/j.physleta.2006.06.071
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The usefulness of Moller-Plesset perturbation theory, a standard technique of quantum chemistry, is determined by singularities in the corresponding energy function in the complex plane of the perturbation parameter. A method is developed that locates singularities from fourth-order perturbation series, using quadratic approximants with bilinear conformal mappings. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:481 / 486
页数:6
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