Antiferromagnetic long range order in the uniform resonating valence bond state on square lattice

@article{Li2010AntiferromagneticLR,
  title={Antiferromagnetic long range order in the uniform resonating valence bond state on square lattice},
  author={Tao E. Li},
  journal={arXiv: Strongly Correlated Electrons},
  year={2010}
}
  • Tao E. Li
  • Published 31 December 2010
  • Physics
  • arXiv: Strongly Correlated Electrons
With extensive variational Monte Carlo simulation, we show that the uniform resonating valence bond state(U-RVB) on square lattice is actually antiferromagnetic long range ordered. The ordered moment is estimated to be $m\approx 0.17$. Finite size scaling analysis on lattice up to lattice size of $50\times 50$ shows that the spin structure factor at the antiferromagnetic ordering wave vector follows perfectly the $\mathrm{S}_{\mathrm{q}=(\pi,\pi)} \simeq S_{0}+\alpha (1/L)^{5/4}$ behavior… 
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