Loading…

Thermalization after an interaction quench in the Hubbard model

We use nonequilibrium dynamical mean-field theory to study the time evolution of the fermionic Hubbard model after an interaction quench. Both in the weak-coupling and in the strong-coupling regime the system is trapped in quasistationary states on intermediate time scales. These two regimes are sep...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2009-07, Vol.103 (5), p.056403-056403, Article 056403
Main Authors: Eckstein, Martin, Kollar, Marcus, Werner, Philipp
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We use nonequilibrium dynamical mean-field theory to study the time evolution of the fermionic Hubbard model after an interaction quench. Both in the weak-coupling and in the strong-coupling regime the system is trapped in quasistationary states on intermediate time scales. These two regimes are separated by a sharp crossover at U(c)dyn=0.8 in units of the bandwidth, where fast thermalization occurs. Our results indicate a dynamical phase transition which should be observable in experiments on trapped fermionic atoms.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.103.056403