Bunji Sakita

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Bunji Sakita ( Japanese 崎 田 文 二 , Sakita Bunji ; * 1930 in Toyama Prefecture , Japan ; † August 31, 2002 in Japan) was a Japanese -American theoretical physicist.

Life

Sakita studied at Kanazawa University (Vordiplom 1953) and then with Shōichi Sakata at Nagoya University , where he graduated in 1956. At the invitation of Robert Marshak , he was at the University of Rochester (where George Sudarshan and Susumu Ōkubo were at the time ), where he received his doctorate in 1959 under Charles Goebel ( The Application of Dispersion Relations to Leptonic Decays ). He then went to the University of Wisconsin – Madison , where he became a professor. In 1964 he was at the Argonne National Laboratory . In 1970 Robert Marshak brought him to the City College of New York , where he led the group for theoretical elementary particle physics and was Distinguished Professor of Physics.

In the 1960s, Sakita, taking up ideas from Eugene Paul Wigner , developed a quark model with the group SU (6), which combined spin and isospin (“super multiplets”). In 1967 he got to know dual models, the forerunners of string theory , on a trip to Israel (at the invitation of Harry Lipkin at the Weimann Institute, where he met Miguel Virasoro and Gabriele Veneziano while the Israeli physicists were in the Six Day War ) and developed them with Keiji Kikkawa , Miguel Virasoro, Chen-Shiung Hsue, Jean-Loup Gervais and other methods for calculating their loop diagrams. In 1971 he and Gervais set up a supersymmetric Lagrange density within the framework of string theory, thus joining the early pioneers of supersymmetry . Sakita applied functional integral methods not only in string theory (with Gervais) and meson field theories of nuclear physics , but also to collective stimuli in many-particle physics . In the 1990s he investigated, among other things, the fractional quantum Hall effect (FQHE) and charge density waves ( Charge Density Waves ). He extended his theory of collective coordinates to include fermions . With Gervais he developed a field theory for solitons at the end of the 1970s and with Jevicki he investigated the limit case of many degrees of color freedom in matrix models. With Rabindra Mohapatra he dealt with GUTs .

In 1970 he was a Guggenheim Fellow and in 1974 received the Japanese Nishina Prize .

literature

  • Keiji Kikkawa, Miguel Virasoro and Spenta R. Wadia (Eds.): A quest for symmetry. Selected Works for Bunji Sakita . World Scientific 1999
  • Quantum theory of many variable systems and fields . World Scientific 1985
  • Michio Kaku , Antal Jevicki, Keiji Kikkawa (Eds.): Quarks, symmetries and strings. A symposium in honor of Sakita's 60th birthday . World Scientific 1991

Web links

Individual evidence

  1. ↑ Sakita Supermultiplets of elementary particles . In: Physical Review B . Volume 136, 1964, p. 1756
  2. ↑ Kikkawa, Sakita and Virasoro: Feynman like diagrams compatible with duality 1,2 In: Physical Review . Volume 184, 1970, p. 1701; Gervais and Sakita: Formulation of dual theories in terms of functional integration . In: Physical Review D . Volume 1, 1970, p. 2857
  3. ↑ Gervais and Sakita: Field Theory Interpretation of Supergauges in Dual Models . In: Nuclear Physics B . Volume 34, 1971, p. 832
  4. ^ Gervais and Sakita: Large N baryonic solitons and quarks . In: Physical Review D . Volume 30, 1984, p. 1795
  5. ↑ Gervais and Sakita: Extended particles in quantum field theory . In: Physical Review D . Volume 11, 1975, p. 2943; Gervais, Antal Jevicki and Sakita: A collective coordinaten method for the quantization of extended systems . In: Physics Reports . Volume 23, 1976, p. 237
  6. ↑ Iso, Karabali and Sakita: Fermions in the lowest Landau level, algebra, droplets, chiral bosons . In: Physics Letters B . Volume 296, 1992, p. 143
  7. ↑ Sakita: Collective variables of fermions and bosonization . In: Physics Letters B . Volume 387, 1996, p. 118
  8. ^ Gervais and Sakita: WKB like functions for systems with many degrees of freedom. A unified theory of solitons and pseudoparticles . In: Physical Review D . Volume 16, 1977, p. 3507
  9. ^ Jevicki and Sakita: The quantum collective field method and its application to the planar limit . In: Nuclear Physics B . Volume 165, 1980, p. 511
personal data
SURNAME Sakita, Bunji
ALTERNATIVE NAMES 崎 田 文 二 (Japanese)
BRIEF DESCRIPTION Japanese physicist
DATE OF BIRTH 1930
PLACE OF BIRTH Toyama Prefecture , Japan
DATE OF DEATH August 31, 2002
Place of death Japan