Wolfhart Zimmermann (17 February 1928 – 18 September 2016) was a German theoretical physicist, known for his contribution in quantum field theory.
Zimmermann attained a doctorate in 1950 at Albert Ludwig University of Freiburg in topology.
Their research group was referred as the Field Club (German: Feldverein) by Wolfgang Pauli.
[4] Along with Kenneth G. Wilson he was one of the pioneers in applications of operator product expansion in quantum field theory.
[5] With Reinhard Oehme of the Enrico Fermi Institute in Chicago (with whom he already collaborated in Göttingen in the 1950s), he worked on the reduction of coupling parameters with group renormalization methods[6] and introduced superconvergence relations for the propagator (gauge field propagator) into Yang–Mills theory, to establish connections between the borders of high energy (e.g. asymptotic freedom) and low energy (confinement).