Harald Fritzsch

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Harald Fritzsch
Fritzsch Foto 1.jpg
Born (1943-02-10) February 10, 1943 (age 75)
Zwickau, Germany
Awards Dirac Medal (2008)
Scientific career
Fields Physics

California Institute of Technology
University of Wuppertal
University of Bern

Ludwig Maximilian University of Munich
Doctoral students Marcus Hutter[1]
Dieter Lüst[1]

Harald Fritzsch (born 10 February 1943 in Zwickau, Germany) is a German theoretical physicist known for his contributions to the theory of quarks, the development of Quantum Chromodynamics and the great unification of the standard model of particle physics.

Education and career[edit]

After completing his education in Zwickau 1961, he became Soldier of the Nationale Volksarmee of the GDR. He studied Physics in Leipzig from 1963 to 1968. After fleeing to West Germany, he continued his studies in Munich where he finished his Ph.D. under the supervision of Heinrich Mitter.

In 1970 Fritzsch visited the Aspen Center of Physics, where he met Murray Gell-Mann. They started a collaboration, first in Aspen, later at the California Institute of Technology. In 1971 they introduced the concept of the colour charge quantum number which allowed them in collaboration with William A. Bardeen to explain the decay rate of pions. In the fall of 1971 Fritzsch and Gell-Mann moved to Geneva in Switzerland, where they worked together at CERN. They proposed a gauge theory for the strong interaction, which now is called Quantumchromodynamics. In September 1972 they moved back to Caltech. In 1975 Fritzsch published a paper together with Peter Minkowski[2] in which they proposed the symmetry group SO(10) as the symmetry of the grand unified theory which has become a standard theory. In 1976 Fritzsch moved to CERN. After working for one year at the University of Wuppertal and the University of Bern, Fritzsch became professor at the Ludwig Maximilian University of Munich in 1980.

Fritzsch worked also on "composite models" of leptons and quarks, mass matrices of quarks and leptons, weak decays of heavy quarks, cosmology and the fundamental constants of physics. He retired in 2008.

In 1971 Fritzsch married Brigitte Goralski. They have two children.



  1. ^ a b Harald Fritzsch at the Mathematics Genealogy Project
  2. ^ Harald Fritzsch and Peter Minkowski (Caltech), ’Unified Interactions of Leptons and Hadrons’, CALT-68-467, (Received Dec 1974), Annals of Physics. 93 (1975) 193-266
  3. ^ Hayes, Brian (4 July 1983). "Review: Quarks: The Stuff of Matter by Harald Fritzsch" (PDF). New Republic: 37–38. 
  4. ^ "Review: Quarks: The Stuff of Matter by Harald Fritzsch". Kirkus Reviews. 23 May 1983. 
  5. ^ "Review: The Creation of Matter: The Universe from Beginning to End by Harald Fritzsch". Kirkus Reviews. 20 November 1984.