Systematic large flavor fTWA approach to interaction quenches in the Hubbard model
Strongly Correlated Electrons
2024-08-28 v2 Quantum Physics
Abstract
We study the nonequilibrium dynamics after an interaction quench in the two-dimensional Hubbard model using the recently introduced fermionic truncated Wigner approximation (fTWA). To assess the range of validity of the method in a systematic way, we consider the SU() Hubbard model with the fermion degeneracy as a natural semiclassical expansion parameter. Using both a numerical and a perturbative analytical approach we show that fTWA is exact at least up to and including the prethermalization dynamics. We discuss the limitations of the method beyond this regime.
Keywords
Cite
@article{arxiv.2007.05063,
title = {Systematic large flavor fTWA approach to interaction quenches in the Hubbard model},
author = {Alexander Osterkorn and Stefan Kehrein},
journal= {arXiv preprint arXiv:2007.05063},
year = {2024}
}
Comments
updated for submission to J. Phys. A: Math. Theor