Violation of the Wiedemann-Franz Law for ultracold atomic gases
arXiv:1410.5841 · doi:10.1103/PhysRevA.93.011602
Abstract
We study energy and particle transport for one-dimensional strongly interacting bosons through a single channel connecting two atomic reservoirs. We show the emergence of particle- and energy- current separation, leading to the violation of the Wiedemann-Franz law. As a consequence, we predict different time scales for the equilibration of temperature and particle imbalances between the reservoirs. Going beyond the linear spectrum approximation, we show the emergence of ther- moelectric effects, which could be controlled by either tuning interactions or the temperature. Our results describe in a unified picture fermions in condensed matter devices and bosons in ultracold atom setups. We conclude discussing the effects of a controllable disorder.
5 pages, 3 Figures + Supplemental Material
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- Perspective on new implementations of atomtronic circuits
- Interaction-Assisted Reversal of Thermopower with Ultracold Atoms
- Ballistic-to-diffusive transition in spin chains with broken integrability
- Thermal Transport in One Dimensional Electronic Fluid
- Breaking down the magnonic Wiedemann-Franz law in the hydrodynamic regime
- Matterwaves, Matterons, and the Atomtronic Transistor Oscillator
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- Mesoscopic electron transport and atomic gases, a review of Frank W. J. Hekking's scientific work
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