Steady-state properties of a thermodynamically unbalanced Fermi gas

Pedro Ribeiro

doi:10.1103/physrevb.96.054302

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arXiv · 1609.03206

Steady-state properties of a thermodynamically unbalanced Fermi gas

Pedro Ribeiro

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Abstract

The current-carrying steady-state that arises in the middle of a metallic wire connected to macroscopic leads is characterized regarding its response functions, correlations and entanglement entropy. The spectral function and the dynamical structure factor show clear non-equilibrium signatures accessible by state-of-the-art techniques. In contrast with the equilibrium case, the entanglement entropy is extensive with logarithmic corrections at zero-temperature that depend on the wire-leads coupling and, in a non-analytic way, on voltage. This shows that some robust universal quantities found in gapless equilibrium phases do not persist away from equilibrium.

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Pedro Ribeiro. 2016-09-11. Steady-state properties of a thermodynamically unbalanced Fermi gas. https://doi.org/10.1103/physrevb.96.054302

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