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arXiv · 1410.7262

Energy and particle currents in a driven integrable system

Dawid Crivelli·Peter Prelovšek·Marcin Mierzejewski
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Abstract

We study the ratio of the energy and particle currents ($j^E/j^N$) in an integrable one dimensional system of interacting fermions. Both currents are driven by a finite (nonzero) dc electric field. In doped insulators, where the local conserved quantities saturate the so called Mazur bound on the charge stiffness, $j^E/j^N$ agrees with the linear--response theory, even though such agreement may be violated for each current alone. However, in the metallic regime with a non-saturated Mazur bound, the ratio $j^E/j^N$ in a driven system is shown to be much larger than predicted by the linear--response theory.

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Dawid Crivelli, Peter Prelovšek, Marcin Mierzejewski. 2014-10-27. Energy and particle currents in a driven integrable system. https://doi.org/10.1103/physrevb.90.195119

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