SciPost Submission Page
Prethermalization of density-density correlations after an interaction quench in the Hubbard model
by Manuel Kreye, Stefan Kehrein
|As Contributors:||Manuel Kreye|
|Submitted by:||Kreye, Manuel|
|Submitted to:||SciPost Physics|
|Subject area:||Quantum Physics|
In weakly perturbed systems that are close to integrability, thermalization can be delayed by the formation of prethermalization plateaus. We study the build-up of density-density correlations after a weak interaction quench in the Hubbard model in $d > 1$ dimensions using unitary perturbation theory. Starting from a pre-quench state at temperature $T$, we show that the prethermalization values of the post-quench correlations are equal to the equilibrium values of the interacting model at the same temperature $T$. This is explained by the local character of density-density correlations.