@article{LangerHeylMcCullochetal.2011,
  author    = {Stephan Langer and Markus Heyl and Ian P. McCulloch and Fabian Heidrich-Meisner},
  title     = {Real-time energy dynamics in spin-1/2 Heisenberg chains},
  journal   = {Physical Review B},
  volume    = {84},
  number    = {20},
  pages     = {205115},
  doi       = {10.1103/physrevb.84.205115},
  year      = {2011},
}