Ne. Bickers et Ch. Pao, RENORMALIZATION-GROUP SOLUTION OF SELF-CONSISTENT-FIELD APPROXIMATIONS FOR INTERACTING ELECTRONS, Physica. B, Condensed matter, 194, 1994, pp. 1073-1074
A numerical renormalization group approach to the solution of self-con
sistent-field equations for correlated lattice electrons is illustrate
d for the two-dimensional Hubbard model. This approach leads to reduct
ions in calculational time and storage of several orders of magnitude
at temperature scales relevant to electronic phase transitions.