扩散置限凝聚模型的相变

PHASE TRANSITION OF THE MODEL OF DIFFUSION LIMITED AGGREGATION

应用动力学重整化群研究扩散置限凝聚模型的相变，结果发现该模型的生长几率｛Ｐｉ｝的多分形谱存在相变点ｑс的值为零，即当ｑ＜ｑｃ时，该模型的生长几率｛Ｐｉ｝不再具有多分形性质，这一结论与目前有关文献结果一致．

The new kinetic renormalized groups is employed to study the phase transition of the model of diffusion limited aggregation,the result is that there is a phase transition in the multifractal spectrum of the growth probabilities {P i}of the model,and the value of the phase transition point q c is zoro.That is,if q<q c,the growth probabilities has no multifractal feature,The conclusion obtained is unison with that of references document concerned.