AB-G$_0$W$_0$: A practical G$_0$W$_0$ method without frequency integration based on an auxiliary boson expansion

Understand

Common G$_0$W$_0$ implementations rely on numerical or analytical frequency integration to determine the G$_0$W$_0$ self-energy, which results in a variety of practical complications.

• Recently, we demonstrated an exact connection between the G$_0$W$_0$ approximation and equation-of-motion (EOM) quantum chemistry approaches [J.
• Chem.
• Phys., 158, 124123 (2023)].