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- W2894986948 abstract "We study the transport properties of a one-dimensional spinful Fermi gas, after junction of two semi-infinite sub-systems held at different temperatures. The ensuing dynamics is studied by analysing the space-time profiles of local observables emerging at large distances $x$ and times $t$, as a function of $zeta = x/t$. At equilibrium, the system displays two distinct species of quasi-particles, naturally associated with different physical degrees of freedom. By employing the generalised hy- drodynamic approach, we show that when the temperatures are finite no notion of separation can be attributed to the quasi-particles. In this case the profiles can not be qualitatively distinguished by those associated to quasi-particles of a single species that can form bound states. On the contrary, signatures of separation emerge in the low-temperature regime, where two distinct characteristic ve- locities appear. In this regime, we analytically show that the profiles display a piece-wise constant form and can be understood in terms of two decoupled Luttinger liquids." @default.
- W2894986948 created "2018-10-12" @default.
- W2894986948 creator A5036891195 @default.
- W2894986948 creator A5053950593 @default.
- W2894986948 creator A5076249507 @default.
- W2894986948 creator A5079548604 @default.
- W2894986948 date "2019-01-15" @default.
- W2894986948 modified "2023-10-07" @default.
- W2894986948 title "Spin-charge separation effects in the low-temperature transport of one-dimensional Fermi gases" @default.
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