A simple many-body based screening optimization and mixing ansatz for improvement of GW/BSE excitation energies of molecular systems

Abstract

We propose a simple many-body based screening mixing strategy to considerably enhance the performance of the Bethe-Salpeter (BS) approach for prediction of excitation energies of molecular systems. This strategy enables us to nearly reproduce results of highly correlated equation of motion coupled cluster singles and doubles (EOM-CCSD) through optimal use of cancellation effects.

There are some errors in the paper and it will take me considerable amount of time to correct them. In order to avoid misleading the community it is much better to withdraw the paper for the time being

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