Interacting spinless fermions in a diamond chain

  title={Interacting spinless fermions in a diamond chain},
  author={A. A. Lopes and R. G. Dias},
  journal={Physical Review B},
  • A. A. Lopes, R. G. Dias
  • Published 2011
  • Physics
  • Physical Review B
  • We study spinless fermions in a flux threaded AB$_2$ chain taking into account nearest-neighbor Coulomb interactions. The exact diagonalization of the spinless AB$_2$ chain is presented in the limiting cases of infinite or zero nearest-neighbor Coulomb repulsion for any filling. Without interactions, the AB$_2$ chain has a flat band even in the presence of magnetic flux. We show that the respective localized states can be written in the most compact form as standing waves in one or two… CONTINUE READING
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