Accurate starting points for one-shot $G_0{W}_0$ and Bethe-Salpeter Equation calculations via effective tuning of range-separated hybrid functionals

Aditi Singh, Subrata Jana, Szymon Śmiga

The accuracy of one-shot $G_0{W}_0$ and Bethe-Salpeter equation (BSE) calculations depends strongly on the underlying starting-point eigensystem, which is commonly obtained from a me…