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Harald Fritsch (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 == After his completing his Abitur 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 worked together with Werner Heisenberg and finished his Ph.D. under supervision of Heinrich Mitter. He spent a year at CERN where he started working together with Murray Gell-Mann. Together, they moved to the California Institute of Technology where in 1971 they introduced the concept of colour charge quantum number which allowed them in collaboration with William A. Bardeen to explain the decay rate of pions. One year later, Gell-Mann and Fritzsch proposed a gauge theory for the strong interaction which nowadays is called Quantumchromodynamics. In 1975 Fritzsch published a paper together with Peter Minkowski〔Harald Fritzsch and Peter Minkowski (Caltech), ’Unified Interactions of Leptons and Hadrons’, CALT-68-467, (Received Dec 1974), Annals Phys.93 (1975) 193-266〕 in which they firstly proposed the symmetry group SO(10) as the symmetry of the grand unified theory which has become a standard theory. Fritzsch work further includes contributions to "composite models" of leptons and quarks, mass matrices of quarks and leptons, weak decays of heavy quarkd, cosmology and the fundamental constants of physics. After working for one year at the University of Wuppertal and the University of Bern, he became professor at the Ludwig Maximilian University of Munich in 1980. He retired in 2008. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Harald Fritzsch」の詳細全文を読む スポンサード リンク
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