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physics.chem-ph2024
Coupled-cluster theory for the ground state and for excitations
Andreas Grüneis, Evgeny Moerman, Matthias Scheffler +2
In the molecular quantum chemistry community, coupled-cluster (CC) methods are well-recognized for their systematic convergence and reliability. The extension of the theory to exte…
cond-mat.mtrl-sci2024★ 8 cited
Finite-size Effects in periodic EOM-CCSD for Ionization Energies and Electron Affinities: Convergence Rate and Extrapolation to the Thermodynamic Limit
Evgeny Moerman, Alejandro Gallo, Andreas Irmler +4
We investigate the convergence of quasi-particle energies for periodic systems to the thermodynamic limit using increasingly large simulation cells corresponding to increasingly de…