Local Spin Correlations in Heisenberg Antiferromagnets
  We use linked cluster series expansion methods to estimate the values of various short distance correlation functions in $S=1/2$ Heisenberg antiferromagnets at T=0, for dimension $d=1,2,3$. The method incorporates the possibility of spontaneous symmetry breaking, which is manifest in $d=2,3$. The results are important in providing a test for approximate theories of the antiferromagnetic ground state. 
Zheng Weihong and J. Oitmaa (Univ. of NSW, Sydney, Australia)