e/1/N expansion

Information
has gloss	eng: In quantum field theory and statistical mechanics, the 1/N expansion (also known as the large-N expansion) is a particular perturbative analysis of quantum field theories with an internal symmetry group such as SO(N) or SU(N). It consists in deriving an expansion for the properties of the theory in powers of 1/N, which is treated as a small parameter.
lexicalization	eng: 1/N expansion
instance of	(noun) a body having finite mass and internal structure but negligible dimensions particle, subatomic particle

Meaning
Italian
has gloss	ita: Nella teoria quantistica dei campi e nella meccanica statistica, l'espansione 1/N è una particolare analisi perturbativa delle teorie quantistiche dei campi con simmetria interna SO(N) o SU(N).
lexicalization	ita: Espansione 1/N
Japanese
has gloss	jpn: 1/N展開 (1/N expansion) は、主に量子論的場の理論で用いられる非摂動論的近似法の1つ。数学的観点からは摂動法の1種だが、物理学では非摂動論的近似法に属する。QCDのクォークの閉じ込め問題の解決を期待して1970年代に開発、研究が進められたが、この問題の解決という観点からは期待はずれな結果に終わった。
lexicalization	jpn: 1/N展開

Media
media:img	1 over N1.png
media:img	1 over N2.png