scholarly journals Assessment of the accuracy of coupled cluster perturbation theory for open-shell systems. I. Triples expansions

2016 ◽  
Vol 144 (19) ◽  
pp. 194102 ◽  
Author(s):  
Janus J. Eriksen ◽  
Devin A. Matthews ◽  
Poul Jørgensen ◽  
Jürgen Gauss
Keyword(s):  
Perturbation Theory ◽  
Open Shell ◽  
Coupled Cluster ◽  
Cluster Perturbation Theory

scholarly journals Assessment of the accuracy of coupled cluster perturbation theory for open-shell systems. II. Quadruples expansions

2016 ◽  
Vol 144 (19) ◽  
pp. 194103 ◽  
Author(s):  
Janus J. Eriksen ◽  
Devin A. Matthews ◽  
Poul Jørgensen ◽  
Jürgen Gauss
Keyword(s):  
Perturbation Theory ◽  
Open Shell ◽  
Coupled Cluster ◽  
Cluster Perturbation Theory

scholarly journals Equation-of-motion coupled cluster perturbation theory revisited

2014 ◽  
Vol 140 (17) ◽  
pp. 174114 ◽  
Author(s):  
Janus J. Eriksen ◽  
Poul Jørgensen ◽  
Jeppe Olsen ◽  
Jürgen Gauss
Keyword(s):  
Perturbation Theory ◽  
Equation Of Motion ◽  
Coupled Cluster ◽  
Cluster Perturbation Theory

scholarly journals Cluster perturbation theory. III. Perturbation series for coupled cluster singles and doubles excitation energies

2019 ◽  
Vol 150 (13) ◽  
pp. 134110 ◽  
Author(s):  
Pablo Baudin ◽  
Filip Pawłowski ◽  
Dmytro Bykov ◽  
Dmitry Liakh ◽  
Kasper Kristensen ◽  
...  
Keyword(s):  
Perturbation Theory ◽  
Perturbation Series ◽  
Coupled Cluster ◽  
Excitation Energies ◽  
Cluster Perturbation Theory

scholarly journals A view on coupled cluster perturbation theory using a bivariational Lagrangian formulation

2016 ◽  
Vol 144 (6) ◽  
pp. 064103 ◽  
Author(s):  
Kasper Kristensen ◽  
Janus J. Eriksen ◽  
Devin A. Matthews ◽  
Jeppe Olsen ◽  
Poul Jørgensen
Keyword(s):  
Perturbation Theory ◽  
Lagrangian Formulation ◽  
Coupled Cluster ◽  
Cluster Perturbation Theory
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