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Article type: Index
2006 Volume 61 Issue 12 Pages
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Published: December 05, 2006
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2006 Volume 61 Issue 12 Pages
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Published: December 05, 2006
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Takayuki Sumiyoshi
2006 Volume 61 Issue 12 Pages
883-
Published: December 05, 2006
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Hiroshi Ezawa
2006 Volume 61 Issue 12 Pages
884-890
Published: December 05, 2006
Released on J-STAGE: May 31, 2022
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Very brief scientific biographical sketches of Yukawa and Tomonaga from their high-school days are followed by short accounts of their achievements and of the fundamental physics in Japan in their days.
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Masako Bando
2006 Volume 61 Issue 12 Pages
890-896
Published: December 05, 2006
Released on J-STAGE: May 31, 2022
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The Scale of Yukawa Spirits is discussed in addressing the following three questions: 1. What is the origin of high-quality of the talented CERN people? 2. Why was it possible for Yukawa and Tomonaga to have made top-class scientific achievements, who were far away from developed European societies? 3. Does the idea of "a federation of states" have something to do with the "Yukawa spirit"?
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Tetsuro Kobayashi
2006 Volume 61 Issue 12 Pages
896-905
Published: December 05, 2006
Released on J-STAGE: May 31, 2022
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Professor Tomonaga was not only a great researcher, but also an excellent mentor for undergraduate as well as graduate students. His education and training are described on the basis of then student's experiences. It is particularly emphasized that Tomonaga gave a long series of lectures on his renormalization theory to undergraduate students. The graduate students were strictly trained at the so-called "Friday Colloquium" presided by him. Its atmosphere is reproduced by recalling the 1952 Fall term one "Intermediate-Coupling Theory of Meson-Nucleon Scattering," as an example. The author also nostalgically describes Tomonaga's dignified and warm personality accompanied with a sense of humor.
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Takuji Okamoto
2006 Volume 61 Issue 12 Pages
905-911
Published: December 05, 2006
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YUKAWA Hideki (1907-1981) received the Nobel Prize for Physics in 1949, and TOMONAGA Sin-itiro (1906-1979) in 1965. These two first Japanese Nobel Laureates studied at the same institutes in their youth and then chose similar professional careers in theoretical physics. Despite this apparent commonality between them, their research strategies were entirely different: While Yukawa liked novel and revolutionary ideas, Tomonaga preferred to make full use of currently available tools. By following the track of the interaction and interchanges of these two physicists, one can comprehend how their characters influenced their researches, as well as how the community of prewar Japanese physicists nurtured the tradition of theoretical physics.
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Michiji Konuma
2006 Volume 61 Issue 12 Pages
912-917
Published: December 05, 2006
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After the World War II Hideki Yukawa and Sin-itiro Tomonaga opposed the nuclear weapons. They became convinced pacifists, and took part in peace movements. In this article the author explains how they became pacifists, what they did, and the meaning of their activities in the present days.
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Taichi Kugo
2006 Volume 61 Issue 12 Pages
918-923
Published: December 05, 2006
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The 'elementary' particle physics began in 1935, when Hideki Yukawa published his pioneering pi-meson theory, and the problem of strong interaction was finally solved 40 years later by the establishment of the Standard Model. The composite models of hadrons by the Sakata school and Sin-itiro Tomonaga's renormalization theory for quantum electrodynamics played essential roles for finding this beautiful solution. It is really surprising that it took only 40 years to solve such desperately difficult problem. The 'elementary' particle physics then split into two new fields, 'quark-hadron physics' and 'unified (ultimate) theory of particle physics', which are now 30 years old already.
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Humitaka Sato
2006 Volume 61 Issue 12 Pages
923-929
Published: December 05, 2006
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Yukawa and Tomonaga had played an essential roles in creating the inter-university research institute system and the start of astrophysics and plasma physics.
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Morikazu Toda
2006 Volume 61 Issue 12 Pages
929-933
Published: December 05, 2006
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Recollections of Tomonaga, with some explanation of the origin of his interest in physics are given. Tomonaga and Yukawa were both interested in how physics is to be developed by introducing new ideas into the very fundamental elements of physics. But their ways were quite different.
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Takeshi Udagawa
2006 Volume 61 Issue 12 Pages
933-939
Published: December 05, 2006
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Yukawa and Tomonaga made epoch-making contributions to the development of elementary particle physics; Yukawa proposed the meson theory of the nuclear force and Tomonaga developed renormalization theory in QED. The nuclear force is, of course, the basis of all nuclear physics. In this sense, Yukawa's work set the foundations for nuclear physics. Tomonaga worked in his late years on problems of collective motion appearing in many many-particle-systems, nuclear systems being one of the examples. Yukawa and Tomonaga were also deeply involved in founding the Institute of Fundamental Physics and Institute for Nuclear Study, through which they made invaluable contributions to the development of the field of nuclear physics. It is almost impossible to report in this short article on all of what they have achieved and thus I whould like to discuss here their contributions to nuclear physics only in a limited scope, based on my personal reminiscence of them.
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Riichiro Chujo
2006 Volume 61 Issue 12 Pages
940-941
Published: December 05, 2006
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Tetsuro Kobayashi
2006 Volume 61 Issue 12 Pages
941-942
Published: December 05, 2006
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Hiroyuki Shiba
2006 Volume 61 Issue 12 Pages
942-943
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
943-944
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
944-
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
944-945
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
945-
Published: December 05, 2006
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2006 Volume 61 Issue 12 Pages
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Published: December 05, 2006
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2006 Volume 61 Issue 12 Pages
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Published: December 05, 2006
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2006 Volume 61 Issue 12 Pages
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Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
954-
Published: December 05, 2006
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Article type: Appendix
2006 Volume 61 Issue 12 Pages
955-957
Published: December 05, 2006
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Article type: Appendix
2006 Volume 61 Issue 12 Pages
959-960
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
961-965
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
965-967
Published: December 05, 2006
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[in Japanese]
2006 Volume 61 Issue 12 Pages
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Article type: Appendix
2006 Volume 61 Issue 12 Pages
968-969
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Article type: Appendix
2006 Volume 61 Issue 12 Pages
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2006 Volume 61 Issue 12 Pages
i-xx
Published: 2006
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