Continuous interpolation between the fully frustrated Ising and quantum   dimer models
  We propose a new quantum model interpolating between the fully frustrated spin-1/2 Ising model in a transverse field and a dimer model. This model contains a resonating-valence-bond phase, including a line with an exactly solvable ground state of the Rokhsar-Kivelson type. We discuss the phase diagrams of this model on the square and triangular (in terms of the dimer representation) lattices. 
Dmitri A. Ivanov and S.E. Korshunov
cond-mat.str-el