S matrix from matrix product states.

@article{Vanderstraeten2014SMF,
  title={S matrix from matrix product states.},
  author={L. Vanderstraeten and J. Haegeman and T. Osborne and F. Verstraete},
  journal={Physical review letters},
  year={2014},
  volume={112 25},
  pages={
          257202
        }
}
  • L. Vanderstraeten, J. Haegeman, +1 author F. Verstraete
  • Published 2014
  • Physics, Medicine
  • Physical review letters
  • We use the matrix product state formalism to construct stationary scattering states of elementary excitations in generic one-dimensional quantum lattice systems. Our method is applied to the spin-1 Heisenberg antiferromagnet, for which we calculate the full magnon-magnon S matrix for arbitrary momenta and spin, the two-particle contribution to the spectral function, and higher order corrections to the magnetization curve. As our method provides an accurate microscopic representation of the… CONTINUE READING

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