Fractional spin liquid hierarchy for spin S antiferromagnets
  We propose a hierarchy of spin liquids with spin S, which are generated via a Schwinger boson projection from 2S (Abelian) chiral spin liquids with S=1/2. We argue that the P and T invariant liquids we construct for integer spin S support SU(2) level k=S non-Abelian statistics. We conjecture that these spin liquids serve as paradigms for antiferromagnets which are disordered through mobile charge carriers. 
Burkhard Scharfenberger, Ronny Thomale, Martin Greiter
cond-mat.str-el