Damping of Bloch oscillations in the Hubbard model

Details Damping of Bloch oscillations in the Hubbard model Damping of Bloch oscillations in the Hubbard model

2011-07-19

arxiv.org/abs/1107.3830v1

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.

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