SYSTEMATIC CONSTRUCTION OF EFFICIENT MANY-BODY PERTURBATION-SERIES

被引：17

作者：

DIETZ, K ^{[1
]}

SCHMIDT, C ^{[1
]}

WARKEN, M ^{[1
]}

HESS, BA ^{[1
]}

机构：

[1] UNIV BONN,INST PHYS & THEORET CHEM,D-53115 BONN,GERMANY

来源：

JOURNAL OF CHEMICAL PHYSICS | 1994年 / 100卷 / 10期

关键词：

D O I：

10.1063/1.466886

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new procedure for the splitting of many-body Hamiltonians into ''free'' and ''interaction'' parts is proposed which leads to a rapidly converging perturbation expansion. The efficiency of this method is shown for the case of small molecules: Already first and second order perturbations turn out to produce very reasonable results even for excited states; higher terms rapidly converge to zero. An important point to notice is that our method allows for a priori estimates of the convergence (or divergence) behavior.

引用

页码：7421 / 7428

页数：8

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