The work discussed algorithm of grand canonical quantum Monte Carlo method for the one-band two-dimensional Hubbard model, and calculated local magnetic moment, magnetic susceptibility, staggered magnetic susceptibility and the internal energy of the model. Results show that grand canonical quantum Monte Carlo method is very effective in dealing with Hubbard model from weak to strong correlation rigim, and also in dealing with many——body problems with strong correlation.

A Monce Carlo Calculation of SU (2) glueball masses on an 5³×30 asymmetric lattice for β=4.3 is performed. The fine-grained data told us, within error 20%, M(2⁺)≈M(0⁺). The Higher excited states are also estimated. The results are M(0⁺)/M(0⁺)=2.6±0.3 and M(2⁺)/M(2⁺)=2.9±0.4.