World with Extra Dimensions and Unified Theory of Elementary Particles

T. Kugo和M. Bando利用5d超重力考虑了新的多夸克束缚态，如五夸克，并开发了这些状态质量的计算方法。他还计算了单极子和电子的电偶极矩和磁偶极矩。Bando和M. Tanimoto还研究了在具有零元素对称矩阵的一类模型中，用夸克和轻子的质量矩阵统一解释中微子质量矩阵的可能性。谷本M考虑了具有各种离散风味对称的模型，并构造了几个可以实际解释夸克和轻子混合和质量矩阵的模型。柳田提出了一个轻生理论，在这个理论中，我们宇宙的重子数量实际上是通过超重的马约拉纳型费米子的衰变产生的。他还写了一篇关于lepptogenesis理论的评论论文。小林开始系统地分析由超弦理论产生的风味结构。他研究了确定模场和自发超对称破缺的机制。前川在一个具有“E6和水平对称”的模型中发现，CP对称的自发破缺也解决了严重的超对称CP问题，可以很好地解释Kobayashi-Maskawa相。他还证明了他的具有反常U(1)对称性的统一模型，如果稍加修改，也给出了自发超对称破缺机制s。杉本和酒井在超弦理论的基础上构建了一种全新的全息QCD模型。他们表明，该模型可以再现现实世界中强子的各种特性。我们还实现了这个研究项目的另一个大目标；即在这四年中，我们每年都举办暑期研修班，作为组织和开展该领域全国合作研究的核心场所。事实上，从2006年在韩国浦项举行的夏季研修院来看，该研修院正在成为亚洲地区国际合作的核心。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