@article{CramerEisert2010,
  author    = {Marcus Cramer and Jens Eisert},
  title     = {A quantum central limit theorem for non-equilibrium systems : exact local relaxation of correlated states},
  doi       = {10.1088/1367-2630/12/5/055020},
  url       = {http://iopscience.iop.org/1367-2630},
  year      = {2010},
}