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arXiv · 1106.3483

Non-equilibrium dynamics of the driven Hubbard model

A. Amaricci·C. Weber·M. Capone·G. Kotliar
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Abstract

We investigate the dynamics of a two-dimensional Hubbard model in a static electric field in order to identify the conditions to reach a non-equilibrium stationary state. For a generic electric field, the convergence to a stationary state requires the coupling to a thermostating bath absorbing the work done by the external force. Following the real-time dynamics of the system, we show that a non-equilibrium stationary state is reached for essentially any value of the coupling to the bath. We map out a phase diagram in terms of dissipation and electric field strengths and identify the dissipation values in which steady current is largest for a given field.

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A. Amaricci, C. Weber, M. Capone, G. Kotliar. 2011-06-17. Non-equilibrium dynamics of the driven Hubbard model. https://doi.org/10.1103/physrevb.86.085110

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