...Its characteristic is that it is an extended homogeneous expression of several physical quantities, and has a self-similar structure. KG Wilson was the one who gave this phenomenology a microscopic content, and his method is called renormalization group theory, and is being used in many many-body problems. In other words, this is a method of gradually eliminating the degrees of freedom of a many-body system (renormalization method), thereby creating a recurrence formula for the physical quantities, and then determining the critical point and critical exponent from the fixed point and the approach to it. ... *Some of the terminology that mentions "Wilson, KG" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その特徴は,いくつかの物理量の拡張された同次式になっており,自己相似な構造をもっていることにある。この現象論にミクロな内容を与えたのが,K.G.ウィルソンで,彼の方法は,くり込み群の理論と呼ばれ,多くの多体問題に使われつつある。これは,いわば,多体系の自由度を少しずつ消去し(くり込みの手法),それによって物理量の漸化式を作り,その固定点とそれへの近づき方から臨界点と臨界指数を求める方法である。… ※「ウィルソン,K.G.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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