Dynamical structure factor of the SU(3) Heisenberg chain: Variational Monte Carlo approach

  title={Dynamical structure factor of the SU(3) Heisenberg chain: Variational Monte Carlo approach},
  author={D{\'a}niel V{\"o}r{\"o}s and K. Penc},
  journal={Physical Review B},
We compute the dynamical spin structure factor S(k, ω) of the SU(3) Heisenberg chain variationally using a truncated Hilbert space spanned by the Gutzwiller projected particle-hole excitations of the Fermi sea, introduced in [B. Dalla Piazza et al., Nature Physics 11, 62 (2015)], with a modified importance sampling. We check the reliability of the method by comparing the S(k, ω) to exact diagonalization results for 18 sites and to the two-soliton continuum of the Bethe Ansatz for 72 sites. We… 


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