Maurice Marc Lévy (7 September 1922 – 13 April 2022) was a French theoretical physicist known for his work on the Sigma model in particle physics.
He left Algeria for France and joined the Physical Research Laboratory of the Sorbonne (LRPS), directed by Jean Cabannes.
Lévy returned to France in 1952, became senior researcher at the CNRS and worked in the physics department of the École normale supérieure (ENS), directed by Yves Rocard.
Lévy was a professor at the Pierre and Marie Curie University right from its foundation in 1971, and a researcher at the Laboratory of Theoretical and High Energy Physics (LPTHE), collaborating in particular with Jean-Louis Basdevant and with John Iliopoulos.
In 1960, he co-authored with Murray Gell-Mann a seminal paper[3] on the Sigma model, which served as a cynosure for particle physics in the following decades, providing the modern framework for understanding the weak interactions and their interplay with chiral symmetry breaking by the strong interactions.