Activity Report for FY2006 of the JSPS Award for Eminent Scientists

  1. Invited eminent scientist (name, title and affiliation, nationality)
  2. Yoichiro Nambu,
    Harry Pratt Judson Distinguished Service Professor Emeritus,
    Department of Physics, Chicago University, USA

  3. Duration of the stay
  4. Oct.18. 2006 - Jan.4. 2007

  5. Hosting environment (accommodation, research institute, status in the host institute)
  6. Kyoto Royal Hotel (Scholarship Room), an office for visiting professor, Guest Scholar

  7. Schedule during the stay (date, research activities, name of the places to visit, and description of the visits )
    • Oct. 18.
    • Arrival in Kyoto

    • Oct. 19-Nov.13.
    • During his stay Prof. Nambu participated in discussions about " spontaneous symmetry breaking" and " origin of quark mass" . with research staff and visiting researchers at the Yukawa Institute for Theoretical Physics, Kyoto University. He also came to the weekly lunch time meetings for informal discussion with the young staff and postdoctoral researchers.
      In addition to research activities at the Yukawa Institute, he visited the following institutions.

    • Nov. 14.
    • Visit to the University of Tsukuba.
      Lecture at the College of Natural Sciences (First Cluster of Colleges of University of Tsukuba). Title ´Physics from 20th Century to 21st Century´
      Discussion with the President of the University of Tsukuba about further internationalization of the science in Japan, university education etc.

    • Nov. 15.
    • Visit to the office of the Japan Society for the Promotion of Science, Tokyo

    • Nov. 16-18.
    • `ttended the workshop at the Yukawa Institute for Theoretical Physics, Kyoto University.
      ´Present and Future of Fundamental Physics–taking over ´Trends of Fundamental Physics: Yukawa–Tomonaga´in 2005–

    • Dec. 4-7.
    • `ttended partially the Yukawa International Seminar (YKIS2006) at the Yukawa Institute.
      ´New Frontiers in QCD–Exotic Hadrons and Hadronic Matter´

    • Dec. 11-13.
    • Lecture was cancelled at the workshop ´Yukawa-Tomonaga Centennial Symposium–Progress in Modern Physics–¸owing to illness. We received his paper for the lecture with Power Point file via e-mail.

    • Dec. 26.
    • Seminar at the Yukawa Institute, Kyoto University.
      Title ´The Legacies of Yukawa and Tomonaga´.

    • Jan. 4
    • Departure from Osaka

  8. Description of and results from the invitation
  9. Hideki Yukawa and Sin-itiro Tomonaga, who are the first and second Nobel prize laureates in Japan, were born on January 23, 1907 and on March 31, 1906, respectively. They were classmates at Kyoto University as well as at high school. Kyoto University has decided to celebrate centennial of their birth throughout the academic year 2006-2007 (2006 April to 2007 March). YITP and Department of Physics, Kyoto University planned to hold ´Yukawa-Tomonaga Centennial Symposium- Progress in Modern Physics–´.

    In this occasion of the Centennial Anniversary, we invited Prof. Nambu who directly knows both Yukawa and Tomonaga to attend those Symposium and workshops and to give lectures not only to experts as well as to general audiences.

    Prof. Nambu stayed at YITP and attended the weekly lunch time meeting to hear from young research staff, graduate students and postdoctoral fellows what they are doing research. He also explains his research experience to them. He discussed the problems of" spontaneous symmetry breaking" and " origin of quark mass" . with research staff and visiting researchers at YITP.

    On Nov. 14, Prof. Nambu visited the University of Tsukuba and gave a lecture at the College of Natural Sciences mainly for the undergraduate students. The title was ´Physics from 20th Century to 21st Century´. He talked about his memory of Yukawa, Tomonaga and Sakata as well as his future prospect for the particle physics. He explained also his own great contributions to the modern particle physics and gave young students strong impressions.

    After that he discussed with the President of the University of Tsukuba about further internationalization of the science in Japan, university education etc.

    For three days of Nov.16-18, he attended the YITP workshop ´Present and Future of Fundamental Physics - taking over ´Trends of Fundamental Physics: Yukawa–Tomonaga´in 2005 –´. He gave important comments to the talks and contributed to elucidate the history of the developments of particle physics in Japan. The proceedings of the workshop to be published will become precious.

    At a YITP seminar held on Dec. 26, he gave the lecture with title ´The Legacies of Yukawa and Tomonaga´, which is the lecture scheduled to be presented at the ´Yukawa-Tomonaga Centennial Symposium – Progress in Modern Physics–´. He talked about the world-leading Japanese particle physics researches led by Yukawa, Tomonaga and Sakata, as well as his own great contributions. The talk gave stimulations and strong impressions to young research staff, graduate students and postdoctoral fellows.

  10. Contribution by the invitee to the host institute (e.g. inspiration to young scientists, internationalization of a host institute as a whole, etc.)
  11. It was very beneficial to have Prof. Nambu at YITP for more than two months. He attended not only the weekly lunch time meetings but also many seminars and discussed with many members at YITP like research staff, graduate students and postdoctoral fellows. It was an invaluable stimulation to young members since he spoke to them frankly asking their on-going physics researches and explained his own research experiences vividly.

    In physics, he discussed the problems of spontaneous symmetry breaking, the number counting of Nambu-Goldstone modes and the origin of quark masses. Since this is fundamental problems universal to particle physics, nuclear physics and condensed matter physics, he discussed most staff at YITP.

    Although this YITP is already international since Yukawa, it is still not truly international one such that European and American physicists stay every day there and it makes the stream of novel world researches. Prof. Nambu gave us precious advices to realize such an institute. Since our new project for doing long-term staying-type workshops was just approved, we will make the best use of the advices.

    Although being given only at the University of Tsukuba this time, the lecture addressed to students gave strong impacts to young undergraduate as well as graduate students. Prof. Nambu directly knows Japanese great physicists Yukawa, Tomonaga and Sakata and himself performed historical contributions. . He directly spoke to young people and talked about the interest and future prospects of fundamental physics. It had really great .power to the young people. The workshop ´Trends of Fundamental Physics´and Nambu´s seminar at YITP also gave strong stimulation to many people who attended those.

  12. Others
  13. We sincerely thank the Japan Society for the Promotion of Science for the funds from the JSPS Award for Eminent Scientists, that enabled the visit of Prof. Nambu to Kyoto University.
    It is rather difficult to invite Nobel prize laureates or similar class people by business class flight together with their spouses by other funds. We hope that JSPS will continue this fund.