String Field Theory and D-brane Dynamics

弦场论和 D 膜动力学

基本信息

批准号：
10640261
负责人：
KUGO Taichi
金额：
$ 2.05万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10640261/
关键词：
string field theory anomaly E_6 grand unified model mass matrix brane world supergravity Kaluza-Klein mode tensor calculus ブレーン世界シナリオ不変作用アノマラスU(1)D-brane braneのゆらぎ Kaluza-Klein モードニュートリノ BRS不変性 GUT

项目摘要

The research results of our project for three academic years in 1998-2000 are as follows :1. String field theory of unoriented open-closed string system : We presented a full order action of the string field theory for the mixed system of open and closed strings and gave a complete proof for its BRS invariance. Anomalous one-loop graphs are identified which are expected to cancel the anomaly. In the course, we proved a generalized version of the GGRT (generalized gluing resmoothing theorem) by Peskin et al.2. Supersymmetric E_6 grand unified model : We constructed a supersymmetric E_6 grand unified model which incorporates the Frogatt-Nielsen mechanism using anomalous U (1) symmetry and can consistently explain all the mass matrices of quark, lepton and neutrino sectors. In the process of analyzing mass matrices, we found an interesting novel relation which holds remarkably well empirically and relates the large lepton mixing angle to the quark masses and a mixing angle.3. Brane world scenario : We pointed out the imporatance of the fluctuation mode of the 3-brane on which our world lies, and proved that the couplings of the higher Kaluza-Klein modes of the bulk gauge field are exponentially suppressed if the brane tension is small. Evaluating the contributions of the fluctuation mode to the fifth force and the supernova cooling process, we obtained the lower bound for the brane tension. As a preparation for investigating the brane world scenario seriously, we first derived a supergravity tensor calculus in 5 dimensions from the known 6-dimensional superconformal tensor calculus, and then explicitly calculated and invariant action for the general system of matter and Yang-Mills supermultiplets coupled to supergravity in 5 dimensions.

我们在1998 - 2000年的三个学年项目的研究结果如下：1。弦字段理论的无导向开放式挂钩系统：我们为开放和封闭字符串混合系统的字符串场理论的完整订单动作提供了完整的作用，并为其BRS不变性提供了完整的证明。鉴定出异常的一环图，预计将取消异常。在课程中，我们证明了Peskin等人2的GGRT（广义胶合胶合定理）的广义版本。超对称E_6 Grand Unified模型：我们构建了一个超对称E_6大统一模型，该模型使用异常U（1）对称性融合了Frogatt-Nielsen机制，并可以始终如一地解释Quark，Lepton和Neutrino领域的所有质量矩阵。在分析质量矩阵的过程中，我们发现了一个有趣的新颖关系，该关系在经验上具有非常好的经验，并将大的Lepton混合角与夸克质量和混合角相关联。3。 Brane World情景：我们指出了我们世界所在的三大武器的波动模式的知名度，并证明，如果brane张力很小，则批量规格领域的较高kaluza-klein模式的耦合会被指数抑制。评估波动模式对第五力和超新星冷却过程的贡献，我们获得了brane张力的下限。为了认真调查Brane世界情景，我们首先从已知的6维超符号张量计算微积分中获得了5个维度的超级张量，然后明确计算了物质和Yang-Mills Supermultiplets的通用系统和不变的动作。