Pair Formation of Hard Core Bosons in Flat Band Systems

@article{Mielke2017PairFO,
  title={Pair Formation of Hard Core Bosons in Flat Band Systems},
  author={Andreas Mielke},
  journal={Journal of Statistical Physics},
  year={2017},
  volume={171},
  pages={679-695}
}
  • A. Mielke
  • Published 8 August 2017
  • Physics
  • Journal of Statistical Physics
Hard core bosons in a large class of one or two dimensional flat band systems have an upper critical density, below which the ground states can be described completely. At the critical density, the ground states are Wigner crystals. If one adds a particle to the system at the critical density, the ground state and the low lying multi particle states of the system can be described as a Wigner crystal with an additional pair of particles. The energy band for the pair is separated from the rest of… 

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