Transition from the Z2 spin liquid to antiferromagnetic order: spectrum on the torus

  title={Transition from the Z2 spin liquid to antiferromagnetic order: spectrum on the torus},
  author={S. Whitsitt and S. Sachdev},
  journal={Bulletin of the American Physical Society},
  • S. Whitsitt, S. Sachdev
  • Published 2016
  • Physics
  • Bulletin of the American Physical Society
  • We describe the finite-size spectrum in the vicinity of the quantum critical point between a Z2 spin liquid and a coplanar antiferromagnet on the torus. We obtain the universal evolution of all low-lying states in an antiferromagnet with global SU(2) spin rotation symmetry, as it moves from the 4-fold topological degeneracy in a gapped Z2 spin liquid to the Anderson “tower-of-states” in the ordere da ntiferromagnet. Due to the existence of nontrivial order on either side of thi st ransition… CONTINUE READING
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