Behavior of coupled cluster energy in the strongly correlated limit of the cyclic polyene model. Comparison with the exact results

1992 ◽  
Vol 42 (1) ◽  
pp. 165-191 ◽  
Author(s):  
Piotr Piecuch ◽  
Ji?� ?�?ek ◽  
Josef Paldus
Keyword(s):  
Model Comparison ◽  
Coupled Cluster ◽  
Exact Results ◽  
Strongly Correlated ◽  
Cyclic Polyene ◽  
Cluster Energy ◽  
Polyene Model

Coupled cluster energy derivatives. Analytic Hessian for the closed‐shell coupled cluster singles and doubles wave function: Theory and applications

1990 ◽  
Vol 92 (8) ◽  
pp. 4924-4940 ◽  
Author(s):  
Henrik Koch ◽  
Hans Jo/rgen Aa. Jensen ◽  
Poul Jo/rgensen ◽  
Trygve Helgaker ◽  
Gustavo E. Scuseria ◽  
...  
Keyword(s):  
Wave Function ◽  
Function Theory ◽  
Closed Shell ◽  
Coupled Cluster ◽  
Energy Derivatives ◽  
Cluster Energy
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