title: Breakdown of the generalized Gibbs ensemble for current-generating quenches.
abstract: We establish a relation between two hallmarks of integrable systems: the relaxation towards the generalized Gibbs ensemble (GGE) and the dissipationless charge transport. We show that the former one is possible only if the so-called Mazur bound on the charge stiffness is saturated by local conserved quantities. As an example we show how a non-GGE steady state with a current can be generated in the one-dimensional model of interacting spinless fermions with a flux quench. Moreover, an extended GGE involving the quasilocal conserved quantities can be formulated for this case.
authors: Institute of Physics, University of Silesia, 40-007 Katowice, Poland.
authors: Marcin
authors: M
authors: Mierzejewski
authors: Faculty of Mathematics and Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia and J. Stefan Institute, SI-1000 Ljubljana, Slovenia.
authors: Peter
authors: P
authors: Prelovšek
authors: Faculty of Mathematics and Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia.
authors: Tomaž
authors: T
authors: Prosen