Spin hamiltonian for which the chiral spin liquid is the exact ground state.
We construct a Hamiltonian that singles out the chiral spin liquid on a square lattice with periodic boundary conditions as the exact and, apart from the twofold topological degeneracy, unique ground state.
Schroeter
Darrell F
DF
Department of Physics, Reed College, Portland, Oregon 97202, USA.
Kapit
Eliot
E
Thomale
Ronny
R
Greiter
Martin
M