Improving the Effective Potential
  A general procedure is presented how to improve the effective potential by using the renormalization group equation (RGE) in MS bar scheme. If one knows the L-loop effective potential and the RGE coefficient functions up to (L+1)-loop level, this procedure gives an improved potential which satisfies the RGE and contains all of the leading, next-to-leading,... , and L-th-to-leading log terms. 
Masako Bando, Taichiro Kugo, Nobuhiro Maekawa and Hiroaki Nakano