# Pros and Cons of the Bethe-Salpeter Formalism for Ground-State Energies.

@article{Loos2020ProsAC, title={Pros and Cons of the Bethe-Salpeter Formalism for Ground-State Energies.}, author={Pierre-Franccois Loos and Anthony Scemama and Ivan Duchemin and Denis Jacquemin and Xavier Blase}, journal={The journal of physical chemistry letters}, year={2020} }

The combination of the many-body Green's function GW approximation and the Bethe-Salpeter equation (BSE) formalism has shown to be a promising alternative to time-dependent density-functional theory (TD-DFT) for computing vertical transition energies and oscillator strengths in molecular systems. The BSE formalism can also be employed to compute ground-state correlation energies thanks to the adiabatic-connection fluctuation- dissipation theorem (ACFDT). Here, we study the topology of the… CONTINUE READING

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