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Article type: Cover
2004 Volume 59 Issue 3 Pages
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Article type: Index
2004 Volume 59 Issue 3 Pages
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Article type: Index
2004 Volume 59 Issue 3 Pages
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Kei-ichi Maeda
Article type: Article
2004 Volume 59 Issue 3 Pages
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Kazunori Itakura
2004 Volume 59 Issue 3 Pages
148-156
Published: March 05, 2004
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It is widely believed that the proton is made of 3 quarks, but this is an oversimplified picture from the viewpoint of Quantum Chromodynamics (QCD). When the scattering energy is large enough, QCD becomes weak coupling and predicts that the proton becomes a dense saturated system of gluons. This saturated gluonic matter called "Color Glass Condensate" appears irrespective of details of the proton, and is even an universal picture for hadrons and nuclei at high energy. In this review, we discuss the recent progress of our understanding of Color Glass Condensate.
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Masanao Ozawa
2004 Volume 59 Issue 3 Pages
157-165
Published: March 05, 2004
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Classical mechanics leads to the deterministic view on the world, according to which the complete knowledge on the past state derives the complete knowledge on future values of physical quantities, whereas quantum mechanics shows that it is impossible to know the past state completely since measurements disturb the state of the measured object. It has long been said that Heisenberg succeeded in expressing this as a simple quantitative relation by his uncertainty principle. However, the relation was not general enough in expressing the quantitative relation between the measurement noise and disturbance. Recently, a new relation was found to solve this problem, and it has become clear that the new relation plays a role of the first principle to derive various quantum limits, some of which are obtained individually, on quantum measurements and quantum information processing in a unified treatment. This paper surveys the above development on the new formulation of uncertainty principle and its applications to quantum computing.
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Makoto Asakawa
2004 Volume 59 Issue 3 Pages
166-171
Published: March 05, 2004
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This article reviews the status of the activity of Free Electron Laser user facilities, as well as state-of-the-art research to extend the wavelength toward X-ray region and achieve high average power.
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Kyoichiro Ozawa, Hideto En'yo
2004 Volume 59 Issue 3 Pages
172-174
Published: March 05, 2004
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We measured mass spectra of vector mesons in nuclear matter to investigate the problem of effective mass of quarks. The experiment was carried out at KEK 12 GeV PS and data acquisition was started in 1997. We have observed a significant excess from known backgrounds in mass spectra of 1998 data. It can be explained as a mass modification of mesons inside a nucleus. Also, we will report recent results of 2002 data.
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Tomohiro Harada
2004 Volume 59 Issue 3 Pages
175-177
Published: March 05, 2004
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Recently it has been revealed that self-similar solutions play an important role in describing the asymptotic or intermediate dynamical behaviour of more general solutions in gravitational collapse. We report our recent results on the cosmic censorship in general relativity and the critical phenomena in Newtonian collapse in the context of this feature of self-similar solutions.
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
178-
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Haruyo Yoshida
Article type: Article
2004 Volume 59 Issue 3 Pages
179-181
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Atsushi Fujimori
Article type: Article
2004 Volume 59 Issue 3 Pages
181-182
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
183-184
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[in Japanese]
Article type: Article
2004 Volume 59 Issue 3 Pages
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
187-189
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
190-191
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
195-200
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Article type: Appendix
2004 Volume 59 Issue 3 Pages
201-206
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