SSE program for the 2D S=1/2 Heisenberg antiferromagnet.

This is a simple but efficient SSE program for the spin-isotropic S=1/2 Heisenberg model. It carries out calculations for Lx*Ly lattices with given (even) lengths (Lx and Ly) at given invergse temperature beta=J/T.

 Source code ssebasic.f90
ssebasic_ying.f90 (same as above, with some comments added)

 Running instructions and example results Instructions and results