The method for determing fixed points LBRT proposed by Kadanoff et al. is found not perfect legal. We then propose a new procedure to obtain fixed points. The numerical calculations in two-dimensional Ising model are performed and found of little difference with Kadanoff's method. The reason has explained. In addition,, the new procedure is easier in pratical numerical work.
Relation:
Chinese Journal of Physics=中國物理學刊 17(2), pp.107-109
