Optimized Attenuated Interaction: Enabling Stochastic Bethe-Salpeter Spectra for Large Systems

Nadine C. Bradbury, Tucker Allen, Minh Nguyen +2

We develop an improved stochastic formalism for the Bethe-Salpeter equation, based on an exact separation of the effective-interaction $W$ to two parts, $W=(W-v_W)+v_W$ where the l…