Editing Renormalization (section)

===History===
A deeper understanding of the physical meaning and generalization of the
renormalization process, which goes beyond the dilatation group of conventional ''renormalizable'' theories,  came from condensed matter physics. [[Leo P. Kadanoff]]'s paper in 1966 proposed the "block-spin" renormalization group.<ref>[[Leo Kadanoff|L.P. Kadanoff]] (1966): "Scaling laws for Ising models near <math>T_c</math>", ''Physics (Long Island City, N.Y.)'' '''2''', 263.</ref> The ''blocking idea'' is a way to define the components of the theory at large distances as aggregates of components at shorter distances.

This approach covered the conceptual point and was given full computational substance<ref name=Wilson1975 /> in the extensive important contributions of Kenneth Wilson. The power of Wilson's ideas was demonstrated by a constructive iterative renormalization solution of a long-standing problem, the [[Kondo effect|Kondo problem]], in 1974,  as well as the preceding seminal developments of his new method in the theory of second-order phase transitions and [[critical phenomena]] in 1971. He was awarded the [[Nobel Prize in Physics]] for these decisive contributions in 1982.