title: Exact chiral spin liquid with non-Abelian anyons.
abstract: We establish the existence of a chiral spin liquid (CSL) as the exact ground state of the Kitaev model on a decorated honeycomb lattice, which is obtained by replacing each site in the familiar honeycomb lattice with a triangle. This CSL state spontaneously breaks time reversal symmetry but preserves other symmetries. There are two topologically distinct CSL's separated by a quantum critical point. Interestingly, vortex excitations in the topologically nontrivial (Chern number +/-1) CSL obey non-Abelian statistics.
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: Hong
authors.initials: H
authors.lastname: Yao
authors.forename: Steven A
authors.initials: SA
authors.lastname: Kivelson