Dimensional crossover in the SU(4) Heisenberg model in the six-dimensional antisymmetric self-conjugate representation revealed by quantum Monte Carlo and linear flavor-wave theory

  title={Dimensional crossover in the SU(4) Heisenberg model in the six-dimensional antisymmetric self-conjugate representation revealed by quantum Monte Carlo and linear flavor-wave theory},
  author={Francisco Hyunkyu Kim and Fakher F. Assaad and Karlo Penc and Fr{\'e}d{\'e}ric Mila},
  journal={Physical Review B},
The antiferromagnetic SU(4) Heisenberg model at half-filling in the fully antisymmetric six-dimensional irreducible representation is investigated, in particular the phase transition that occurs between the two-dimensional square lattice and the one-dimensional chains when tuning the inter-chain coupling. The auxiliary field quantum Monte Carlo (QMC) and the linear flavor-wave theory (LFWT) are used to study this transition. The LFWT, which had previously predicted a long-range… 

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