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@ARTICLE{Richter:865569,
      author       = {Richter, Jonas and Jin, Fengping and Knipschild, Lars and
                      Herbrych, Jacek and De Raedt, Hans and Michielsen, Kristel
                      and Gemmer, Jochen and Steinigeweg, Robin},
      title        = {{M}agnetization and energy dynamics in spin ladders:
                      {E}vidence of diffusion in time, frequency, position, and
                      momentum},
      journal      = {Physical review / B},
      volume       = {99},
      number       = {14},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-04934},
      pages        = {144422},
      year         = {2019},
      abstract     = {The dynamics of magnetization and energy densities are
                      studied in the two-leg spin-1/2 ladder. Usingan efficient
                      pure-state approach based on the concept of typicality, we
                      calculate spatiotemporal correlationfunctions for large
                      systems with up to 40 lattice sites. In addition, two
                      subsequent Fourier transforms fromreal to momentum space as
                      well as from the time to frequency domain yield the
                      respective dynamical structurefactors. Summarizing our main
                      results, we unveil the existence of genuine diffusion for
                      both spin and energy. Inparticular, this finding is based on
                      four distinct signatures which can all be equally well
                      detected: (i) Gaussiandensity profiles, (ii)
                      time-independent diffusion coefficients, (iii) exponentially
                      decaying density modes, and (iv)Lorentzian line shapes of
                      the dynamical structure factor. The combination of
                      (i)–(iv) provides a comprehensivepicture of
                      high-temperature dynamics in this archetypal nonintegrable
                      quantum model.},
      cin          = {JSC / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406 / $I:(DE-82)080012_20140620$},
      pnm          = {511 - Computational Science and Mathematical Methods
                      (POF3-511) / Manipulation and dynamics of quantum spin
                      systems $(jjsc09_20180501)$},
      pid          = {G:(DE-HGF)POF3-511 / $G:(DE-Juel1)jjsc09_20180501$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000466385900005},
      doi          = {10.1103/PhysRevB.99.144422},
      url          = {https://juser.fz-juelich.de/record/865569},
}