Nonthermal symmetry broken states in the strongly interacting Hubbard model
Strongly Correlated Electrons
2013-01-29 v1
Abstract
We study the time evolution of the antiferromagnetic order parameter after interaction quenches in the Hubbard model. Using the nonequilibrium dynamical mean field formalism, we show that the system, after a quench from intermediate to strong interaction, is trapped in a nonthermal state which is reminiscent of a photo-doped state and protected by the slow decay of doublons. If the effective doping of this state is low enough, it exhibits robust antiferromagnetic order, even if the system is highly excited and the thermal state thus expected to be paramagnetic. We comment on the implication of our findings for the stability of nonthermal superconducting states.
Keywords
Cite
@article{arxiv.1208.0743,
title = {Nonthermal symmetry broken states in the strongly interacting Hubbard model},
author = {Philipp Werner and Naoto Tsuji and Martin Eckstein},
journal= {arXiv preprint arXiv:1208.0743},
year = {2013}
}