Steady-state properties of a nonequilibrium Fermi gas. Ribeiro, P. Physical Review B, 96(5):054302, 8, 2017.
Steady-state properties of a nonequilibrium Fermi gas [pdf]Paper  Steady-state properties of a nonequilibrium Fermi gas [link]Website  abstract   bibtex   
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.

Downloads: 0