title: Correlation-induced memory effects in transport properties of low-dimensional systems.
abstract: We demonstrate the remnant presence of initial correlations in the steady-state electrical current jS flowing between low-dimensional interacting leads. The leads are described as Luttinger liquids and electrons can tunnel via a quantum point contact. We derive an analytic result for the time-dependent current and show that ground-state correlations have a large impact on the relaxation and long-time behavior. In particular, the I-V characteristic is not reproduced by quenching the interaction in time. We further present a universal formula of jS for an arbitrary sequence of interaction quenches and it is established that jS is history dependent for nonsmooth switching process.
authors.affiliation: Dipartimento di Fisica, Universitá di Roma Tor Vergata, Via della Ricerca Scientifica 1, I-00133 Rome, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Perfetto
authors.forename: G
authors.initials: G
authors.lastname: Stefanucci
authors.forename: M
authors.initials: M
authors.lastname: Cini