Bold diagrammatic Monte Carlo method applied to fermionized frustrated spins.

@article{Kulagin2013BoldDM,
  title={Bold diagrammatic Monte Carlo method applied to fermionized frustrated spins.},
  author={Sergey A. Kulagin and Nikolay Prokof'ev and Oleg A. Starykh and Boris Svistunov and Christopher N. Varney},
  journal={Physical review letters},
  year={2013},
  volume={110 7},
  pages={
          070601
        }
}
We demonstrate, by considering the triangular lattice spin-1/2 Heisenberg model, that Monte Carlo sampling of skeleton Feynman diagrams within the fermionization framework offers a universal first-principles tool for strongly correlated lattice quantum systems. We observe the fermionic sign blessing--cancellation of higher order diagrams leading to a finite convergence radius of the series. We calculate the magnetic susceptibility of the triangular-lattice quantum antiferromagnet in the… 
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