Combining Renormalized Singles GW Methods with the Bethe-Salpeter Equation for Accurate Neutral Excitation Energies

Yang W, Li J, Golze D (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Chemical Theory and Computation American Chemical Society

Book Volume: 18

Pages Range: 6637-6645

Journal Issue: 11

DOI: 10.1021/acs.jctc.2c00686

Abstract

We apply the renormalized singles (RS) Green's function in the Bethe-Salpeter equation (BSE)/GW approach to predict accurate neutral excitation energies of molecular systems. The BSE calculations are performed on top of the GRSWRS method, which uses the RS Green's function also for the computation of the screened Coulomb interaction W. We show that the BSE/GRSWRS approach significantly outperforms BSE/G0W0 for predicting excitation energies of valence, Rydberg, and charge-transfer (CT) excitations by benchmarking the Truhlar-Gagliardi set, Stein CT set, and an atomic Rydberg test set. For the Truhlar-Gagliardi test set, BSE/GRSWRS provides comparable accuracy to time-dependent density functional theory (TDDFT) and is slightly better than BSE starting from eigenvalue self-consistent GW (evGW). For the Stein CT test set, BSE/GRSWRS significantly outperforms BSE/G0W0 and TDDFT with the accuracy comparable to BSE/evGW. We also show that BSE/GRSWRS predicts Rydberg excitation energies of atomic systems well. Besides the excellent accuracy, BSE/GRSWRS largely eliminates the dependence on the choice of the density functional approximation. This work demonstrates that the BSE/GRSWRS approach is accurate and efficient for predicting excitation energies for a broad range of systems, which expands the applicability of the BSE/GW approach.

Involved external institutions

Duke University US United States (USA) (US) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Yang, W., Li, J., & Golze, D. (2022). Combining Renormalized Singles GW Methods with the Bethe-Salpeter Equation for Accurate Neutral Excitation Energies. Journal of Chemical Theory and Computation, 18(11), 6637-6645. https://doi.org/10.1021/acs.jctc.2c00686

MLA:

Yang, Weitao, Jiachen Li, and Dorothea Golze. "Combining Renormalized Singles GW Methods with the Bethe-Salpeter Equation for Accurate Neutral Excitation Energies." Journal of Chemical Theory and Computation 18.11 (2022): 6637-6645.

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