湯川秀樹
Araki is the son of the University of Kyoto physics professor Gentarō Araki, with whom he studied and with whom in 1954 he published his first physics paper. He earned his diploma under Hideki Yukawa and in 1960 he attained his doctorate at Princeton University with thesis advisors Rudolf Haag and Arthur Wightman. Since 1966 he was a professor at the University of Kyoto, at the Research Institute for Mathematical Sciences (RIMS), of which he was also the director.