Gapless spin liquids in disguise

@inproceedings{Ferrari2021GaplessSL,
  title={Gapless spin liquids in disguise},
  author={Francesco Ferrari and Alberto Parola and Federico Becca},
  year={2021}
}
We show that gapless spin liquids, which are potential candidates to describe the ground state of frustrated Heisenberg models in two dimensions, become trivial insulators on cylindrical geometries with an even number of legs. In particular, we report calculations for Gutzwiller-projected fermionic states on strips of square and kagome lattices. By choosing different boundary conditions for the fermionic degrees of freedom, both gapless and gapped states may be realized, the latter ones having… 

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