Towards a pair natural orbital coupled cluster method for excited states

2016 ◽  
Vol 145 (3) ◽  
pp. 034102 ◽  
Author(s):  
Achintya Kumar Dutta ◽  
Frank Neese ◽  
Róbert Izsák
Keyword(s):  
Excited States ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method ◽  
Natural Orbital

The Fock-Space Coupled-Cluster Method in the Calculation of Excited State Properties

2005 ◽  
Vol 70 (6) ◽  
pp. 811-825 ◽  
Author(s):  
Monika Musiał ◽  
Leszek Meissner
Keyword(s):  
Experimental Data ◽  
Excited States ◽  
Fock Space ◽  
Hamiltonian Formulation ◽  
Basis Sets ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method ◽  
Excitation Energies ◽  
Equilibrium Geometries

Our recently developed intermediate Hamiltonian Fock-space coupled-cluster (FS-CC) method with singles and doubles is applied to calculation of equilibrium geometries, harmonic frequencies and adiabatic excitation energies for some excited states of N2 and CO. Due to the intermediate Hamiltonian formulation, which provides a robust computational scheme for solving the FS-CC equations, and the efficient factorization strategy, relatively large basis sets and reference spaces are employed permitting a comparison of calculated properties with experimental data.

A domain-based local pair natural orbital implementation of the equation of motion coupled cluster method for electron attached states

2019 ◽  
Vol 150 (16) ◽  
pp. 164123 ◽  
Author(s):  
Achintya Kumar Dutta ◽  
Masaaki Saitow ◽  
Baptiste Demoulin ◽  
Frank Neese ◽  
Róbert Izsák
Keyword(s):  
Equation Of Motion ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method ◽  
Natural Orbital ◽  
Local Pair
Sign in / Sign up

Export Citation Format

Share Document