73 citations · 84 across the 3 of their papers we have counts for
3 papers
Cumulant methods for electron-phonon problems. II. The self-consistent cumulant expansion
Paul J. Robinson, Ian S. Dunn, David R. Reichman
In this work we present a self-consistent cumulant expansion (SC-CE) and investigate its accuracy for the one-dimensional Holstein model with and without phonon dispersion. We show…
Cumulant methods for electron-phonon problems. I. Perturbative expansions
Paul J. Robinson, Ian S. Dunn, David R. Reichman
In this work we investigate the ability of the cumulant expansion (CE) to capture one-particle spectral information in electron-phonon coupled systems at both zero and finite tempe…
Removing instabilities in the hierarchical equations of motion: exact and approximate projection approaches
Ian S. Dunn, Roel Tempelaar, David R. Reichman
The hierarchical equations of motion (HEOM) provide a numerically exact approach for computing the reduced dynamics of a quantum system linearly coupled to a bath. We have found th…