In what year was the physicist who introduced the 't Hooft operator born?
Gerard 't Hooft Gerardus (Gerard) 't Hooft (] ; born July 5, 1946) is a Dutch theoretical physicist and professor at Utrecht University, the Netherlands. He shared the 1999 Nobel Prize in Physics with his thesis advisor Martinus J. G. Veltman "for elucidating the quantum structure of electroweak interactions".
H. Dieter Zeh Heinz-Dieter Zeh (] ; born 8 May 1932 in Braunschweig, Germany), usually referred to as H. Dieter Zeh, is a professor emeritus of the University of Heidelberg and theoretical physicist.