World with Extra Dimensions and Unified Theory of Elementary Particles

T.Kugo和M.Bando利用5D超引力考虑了新的多夸克束缚态，如五夸克态，并发展了这些态的质量的计算方法。他还计算了单极和‘电子’的电偶极矩和磁偶极矩。M.Bando和M.TAnimoto还研究了在一类具有零元素对称矩阵的模型中将中微子质量矩阵与夸克和轻子的质量矩阵统一解释的可能性。M.TAnimoto考虑了具有各种离散味道对称性的模型，并建立了几个可以实际解释夸克和轻子的混合物和质量矩阵的模型。T.Yanagida提出了微子发生理论，其中我们宇宙的重子数实际上是由超重的Majorana类型费米子衰变产生的。他还写了一篇关于瘦子发生理论的综述论文。小林开始对超弦理论产生的味道结构进行系统的分析。他研究了测定…的机制N.Maekawa在一个具有“E6和水平对称性”的模型中发现，CP对称性的自发破缺也解决了严重的超对称CP问题，正确地解释了小林-Maskawa相。他还证明了他的具有反常U(1)对称性的统一模型，如果稍作修改，也可以给出一个自发的超对称破缺机制。S.Sugimoto和T.Sakai在超弦理论的基础上构建了一个新的全息QCD模型。他们表明，该模型可以再现现实世界中强子的各种性质。我们还实现了这个研究项目的另一个大目标，那就是这四年我们每年都举办暑期研究所，作为组织和开展这一领域全国合作研究的核心场所。事实上，2006年夏季学院在韩国浦项市举办的事实表明，这个夏季学院现在甚至正在成为亚洲国际合作的核心。较少

T. Kugo, with M. Bando, considered new multi-quark bound states like penta-quarks using 5d supergravity and developed the computing method for masses of those states. He also calculated the electric and magnetic dipole moments of monopole and 'electron'.M. Bando, together with M. Tanimoto, also studied the possibility explaining neutrino mass matrix unifiedly with those of quarks and leptons in a category of models with a symetric matrix with zero elements.M Tanimoto considered models which possess various discrete flavor symmetries, and constructed several models which can actually explain mixings and mass matrices of quark and leptons.T. Yanagida proposed a theory of leptogenesis in which baryon number of our Universe is in fact generated through the decay of superheavy Majorana-type fermions. He also wrote a review paper on leptogenesis theory.T. Kobayashi started a systematic analysis of the flavor structures resulting from superstring theory. He stu died the mechanism for determin … More ing the moduli fields and spontaneous supersymmetry breaking.N. Maekawa found in a model with "E6 and horizontal symmetry" that a spontaneous breaking of CP symmetry resolves also the serious Supersymmetric CP problem explaining the Kobayashi-Maskawa phase properly. He also showed that his unified model with anomalous U(1) symmetry, if modified slightly, also gives a spontaneous supersymmetry breaking mechanism.S. Sugimoto, together with T. Sakai, constructed a novel holographic QCD model based on the superstring theory. They showed that the model can reproduce various properties of hadrons in our real world.We also achieved another big aim of this research project; namely we held the summer institute every year f or this four years as a core place where nation-wide cooperative researches in this field are organized and carried out. In fact, as shown by the fact that the Summer Institute in 2006 was held at Pohang in Korea, this Summer Institute is now becoming even a core of international collaborations in Asia. Less