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Bunji Sakita
was a Japanese-American theoretical physicist who made important contributions in quantum field theory, superstring theory and discovered supersymmetry in 1971. He was a Distinguished Professor of Physics at the City College of New York.
==Early years==
Bunji Sakita was born in Japan in 1930 in the Toyama prefecture. He received his bachelor's degree from Kanazawa University in 1953. He then worked with Sakata's group in Nagoya University, obtaining his master's degree in 1956. He was among a select group of Japanese students recruited by Robert Marshak to come for graduate studies to the University of Rochester. In Rochester, Sakita worked with Professor Charles Goebel and received his Ph.D in 1959. He went onto a postdoctoral position and a professorship at the University of Wisconsin–Madison. In his beginning years at Wisconsin, and during a year he spent at the Argonne National Laboratory, he developed the SU(6) symmetry of the nonrelativistic quark model generalizing Wigner's supermultiplet symmetry of combining spin and isospin.
In 1967, during a visit to Israel, he learned of the dual resonance model, and his later work at Wisconsin was mostly devoted to this idea. With Goebel, he obtained the many-particle generalization of the Veneziano amplitude. In work with Keiji Kikkawa, M. A. Virasoro and others, he addressed the problem of unitarity of the dual amplitudes, setting up the formalism of dual diagrams, analogous to Feynman diagrams, for the computation of loop amplitudes. In work done with C.S. Hsue, M. A. Virasoro and notably with Jean-Loup Gervais, Sakita developed the functional formalism for these calculations in which summation over Riemann surfaces naturally emerged.
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