Spin structure factor and thermodynamics in the antiferromagnetic   quantum Ising model in the pyrochlore lattice
  We numerically compute the temperature dependence of spin structure factor and thermodynamic quantities in the antiferromagnetic quantum Ising model in the pyrochlore lattice. This model exhibits spin disorder ground state with exponentially-decayed spin correlation. We reproduce the temperature dependence of the pinch point structure in the neutron scattering experiment and correct entropy obtained from the measurement of the specific heat. 
Cheng-Ju Lin, Chen-Nan Liao, Chyh-Hong Chern
cond-mat.stat-mech