Self-Consistent RPA from a Coupled Cluster Wave Function Perspective

Self-Consistent RPA from a Coupled Cluster Wave Function Perspective

Self-Consistent RPA is rederived in a consistent way with the help of the Coupled Cluster ground state wave function truncated at the two body level. An exact killing operator for this wave function is introduced allowing for a detailed discussion of the approximation scheme. Several exactly solvabl...

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Bibliographic Details
Main Authors: Jemai, M, Delion, D. S, Schuck, P
Format: Journal Article
Language:English
Published: 07-09-2013
Subjects:
Physics - Nuclear Theory
Physics - Strongly Correlated Electrons
Online Access:Get full text
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Summary:Self-Consistent RPA is rederived in a consistent way with the help of the Coupled Cluster ground state wave function truncated at the two body level. An exact killing operator for this wave function is introduced allowing for a detailed discussion of the approximation scheme. Several exactly solvable models are reanalyzed under this new perspective giving raise to a quantitative evaluation of the performances of this many body method.
DOI:10.48550/arxiv.1307.1803