Combining coupled cluster and perturbation theory

1999 ◽  
Vol 111 (24) ◽  
pp. 10815-10826 ◽  
Author(s):  
Marcel Nooijen
Keyword(s):  
Perturbation Theory ◽  
Coupled Cluster

Multicomponent Orbital-Optimized Perturbation Theory Methods: Approaching Coupled Cluster Accuracy at Lower Cost

2020 ◽  
Vol 11 (4) ◽  
pp. 1578-1583 ◽  
Author(s):  
Fabijan Pavošević ◽  
Benjamin J. G. Rousseau ◽  
Sharon Hammes-Schiffer
Keyword(s):  
Perturbation Theory ◽  
Lower Cost ◽  
Coupled Cluster ◽  
Cluster Accuracy

Brillouin-Wigner Perturbation Theory as a Possible more Effective Alternative to Many-Body Rayleigh-Schrodinger Perturbation Theory and Coupled Cluster Theory

1995 ◽  
Vol 60 (9) ◽  
pp. 1419-1428 ◽  
Author(s):  
Petr Čársky ◽  
Vojtěch Hrouda ◽  
Vladimír Sychrovský ◽  
Ivan Hubač ◽  
Peter Babinec ◽  
...  
Keyword(s):  
Perturbation Theory ◽  
Computational Methods ◽  
Effective Alternative ◽  
Coupled Cluster ◽  
View Point ◽  
Many Body ◽  
Coupled Cluster Theory ◽  
Cluster Theory ◽  
Schrödinger Perturbation

Brillouin-Wigner perturbation theory is revisited using the Lippmann-Schwinger equation and applied to the H2O molecule. The results obtained are examined from the view-point of the development of practical computational methods.

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