Kipton M. Barros

Jan 11, 2024 | link.aps.org | Kipton M. Barros |Los Alamos |Matthew Carbone |Shubhang Goswami

The rational function approximation provides a natural and interpretable representation of response functions such as the many-body spectral functions. We apply the vector fitting (VFIT) algorithm to fit a variety of spectral functions calculated from the Holstein model of electron-phonon interactions.