Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-07-19
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 3 figures
Scientific paper
Using nonequilibrium dynamical mean-field theory, we study the isolated Hubbard model in a static electric field in the limit of weak interactions. Linear response behavior is established at long times, but only if the interaction exceeds a critical value, below which the system exhibits an AC-type response with Bloch oscillations. The transition from AC to DC response is defined in terms of the universal long-time behavior of the system, which does not depend on the initial condition.
Eckstein Martin
Werner Philipp
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