Stability of U(1) spin liquids in two dimensions

@inproceedings{Hermele2004StabilityOU,
  title={Stability of U(1) spin liquids in two dimensions},
  author={Michael A. Hermele and T Senthil and Matthew P. A. Fisher and Patrick A. Lee and Naoto Nagaosa and Xiao-Gang Wen},
  year={2004}
}
We establish that spin liquids described in terms of gapless fermionic (Dirac) spinons and gapless U(1) gauge fluctuations can be stable in two dimensions, at least when the physical SU(2) spin symmetry is generalized to SU(N). Equivalently, we show that compact QED3 has a deconfined phase for a large number of fermion fields, in the sense that monopole fluctuations can be irrelevant at low energies. A precise characterization is provided by an emergent global topological U(1) symmetry… CONTINUE READING

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