Eugene Wigner was a Hungarian-born American physicist who shared with the German physicist Hans Jensen and the German-born US physicist Maria Mayer the 1963 Nobel Prize in Physics for his work in the field of nuclear physics. He also worked with Enrico Fermi on the Manhattan Project during World War II, and received the 1960 Atoms for Peace Award.

 

Wigner was the first to apply group theory to quantum mechanics. With this technique he discovered the law of conservation of parity.