Dispersion and symmetry of bound states in the shastry-sutherland model

@article{Knetter2000DispersionAS,
  title={Dispersion and symmetry of bound states in the shastry-sutherland model},
  author={Knetter and Buhler and Muller-Hartmann and Uhrig},
  journal={Physical review letters},
  year={2000},
  volume={85 18},
  pages={3958-61}
}
Bound states made from two triplet excitations on the Shastry-Sutherland lattice are investigated. Based on the perturbative unitary transformation by flow equations quantitative properties like dispersions and qualitative properties like symmetries are determined. The high order results [up to (J2/J1)(14)] permit one to fix the parameters of SrCu2(BO3)(2… CONTINUE READING