>>415
>双対共鳴モデルの研究の中でヴィラソロ代数を生成する演算子のいくつかを書き下ろしている

双対共鳴モデル：Dual resonance model（下記）
”Yoichiro Nambu,[2] Holger Bech Nielsen,[3] and Leonard Susskind[4] provided a physical interpretation in terms of an infinite number of simple harmonic oscillators describing the motion of an extended one-dimensional string, hence came the name "string theory."”
ノーベル賞の南部先生ね

https://en.wikipedia.org/wiki/Dual_resonance_model
Dual resonance model
In theoretical physics, a dual resonance model arose during the early investigation (1968?1973) of string theory as an S-matrix theory of the strong interaction.
Overview
The dual resonance model was based upon the observation that the amplitudes for the s-channel scatterings matched exactly with the amplitudes for the t-channel scatterings among mesons and also the Regge trajectory. It began with the Euler beta function model of Gabriele Veneziano in 1968 for a 4-particle amplitude which has the property that it is explicitly s?t crossing symmetric, exhibits duality between the description in terms of Regge poles or of resonances, and provides a closed-form solution to non-linear finite-energy sum rules relating s- and t- channels.

つづく