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@INPROCEEDINGS{Steinigeweg:837948,
      author       = {Steinigeweg, R and Jin, Fengping and Schmidtke, D and De
                      Raedt, H and Michielsen, Kristel and Gemmer, J},
      title        = {{R}eal-time broadening of nonequilibrium density profiles
                      and the role of the specific initial-state realization},
      reportid     = {FZJ-2017-06709},
      year         = {2017},
      abstract     = {The real-time broadening of density profiles starting from
                      nonequilibrium states is at the center of transportin
                      condensed-matter systems and dynamics in ultracold atomic
                      gases. Initial profiles close to equilibrium areexpected to
                      evolve according to the linear response, e.g., as given by
                      the current correlator evaluated exactly atequilibrium.
                      Significantly off equilibrium, the linear response is
                      expected to break down and even a description interms of
                      canonical ensembles is questionable.We unveil that single
                      pure states with density profiles of maximumamplitude yield
                      a broadening in perfect agreement with the linear response,
                      if the structure of these statesinvolves randomness in terms
                      of decoherent off-diagonal density-matrix elements. While
                      these states allow forspin diffusion in the XXZ spin-1/2
                      chain at large exchange anisotropies, coherences yield
                      entirely differentbehavior.},
      month         = {Sep},
      date          = {2017-09-14},
      organization  = {Big ideas in quantum matter, Nijmegen
                       (The Netherlands), 14 Sep 2017 - 15 Sep
                       2017},
      subtyp        = {Other},
      cin          = {JSC},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {511 - Computational Science and Mathematical Methods
                      (POF3-511)},
      pid          = {G:(DE-HGF)POF3-511},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/837948},
}