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Geoffrey F. Chew (born June 5, 1924)〔''U.S. Public Records Index'' Vol 1 (Provo, UT: Ancestry.com Operations, Inc.), 2010.〕 is an American theoretical physicist. He is known for his bootstrap theory of strong interactions. He has worked as a professor of physics at the UC Berkeley since 1957 and has been an emeritus since 1991. Chew holds a PhD in theoretical particle physics (1944–1946) from the University of Chicago. Between 1950 and 1956, he was a physics faculty member at the University of Illinois. In addition, Chew was a member of the National Academy of Sciences as well as the American Academy of Arts and Sciences.〔(Faculty: Geoffrey F. Chew ), Physics @ Berkeley, Department of Physics University of California (downloaded 2 April 2012)〕 ==Achievements== Chew was a student of Enrico Fermi. His students include David Gross, one of the winners of the 2004 Nobel Prize in Physics, and John H. Schwarz, one of the pioneers of string theory. Chew was known as a leader of the S-matrix approach to the strong interaction and the associated bootstrap principle, a theory whose popularity peaked in the 1960s when he led an influential theory group at UC Berkeley. S-matrix theorists sought to understand the strong interaction by using the analytic properties of the scattering matrix to calculate the interactions of bound-states without assuming that there is a point-particle field theory underneath. The S-matrix approach did not provide a local space-time description. Although it was not immediately appreciated by the practitioners, it was a natural framework in which to produce a quantum theory of gravity. Chew's central contribution to the program came in 1960. Along with collaborator Steven Frautschi, they noted that the mesons fall into families where the square of the mass is linearly proportional to the spin, with the same constant of proportionality for each of the families. Since bound states in quantum mechanics naturally fall into families of this sort, their conclusion, quickly accepted, was that none of the strongly interacting particles were elementary. The conservative point of view was that the bound states were made up of elementary particles, but Chew's more far-reaching vision was that there would be a new type of theory which describes the interactions of bound-states which have no point-like constituents at all. This approach was sometimes called ''nuclear democracy'', since it avoided singling out certain particles as elementary. 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「Geoffrey Chew」の詳細全文を読む スポンサード リンク
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