RUI: Supersymmetric Gauge Theory and Dirichlet-Branes

RUI：超对称规范理论和狄利克雷-布拉内斯

• 批准号: 0140281
• 负责人: Stephen Naculich
• 金额: $ 10.2万
• 依托单位: Bowdoin College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-10-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0140281&HistoricalAwards=false
• 关键词: RUI; Supersymmetric; Gauge; Theory; Dirichlet

The primary aim of the project is to explore connections between theories describing two different fundamental forces, namely, the nuclear force and gravity. The strong and weak nuclear forces are described by gauge theories, whereas quantum gravity is thought to be described by string theory. String theory, however, contains not only strings but also D-branes, extended objects whose properties involve supersymmetric gauge theories, thus providing the connection between the two types of theory. Specifically, the project focuses on the properties of particular string theories containing D-branes and orientifold planes; in these theories, the supersymmetric gauge theories describing the D-branes include the analogs of quarks.The interest of this line of research is that questions impossible to answer in one theory may be easy to answer using the other theory, and vice versa, allowing progress to be made in both. For example, well-understood properties of gauge theory could lead to a better understanding of string theory, and thus quantum gravity, which has long been an unsolved problem. Conversely, string theory could be used to probe gauge theories in the poorly understood strong-coupling regime. Ultimately, this could explain the phenomenon of quark confinement (that is, the fact that free quarks cannot be observed) and yield a quantitative understanding of the structure of protons, nuclei, etc., in terms of the properties of their constituent quarks.

该项目的主要目的是探索描述两种不同基本力的理论之间的联系，即核力量和重力。 强和弱的核力量是通过量规理论描述的，而量子重力被认为是用弦理论描述的。 然而，弦理论不仅包含字符串，还包含d-branes，其属性涉及超对称规格理论的扩展对象，从而提供了两种类型的理论之间的联系。 具体而言，该项目着重于包含D-Branes和Erientifold平面的特定字符串理论的属性； 在这些理论中，描述D-branes的超对称仪表理论包括夸克的类似物。这一研究的兴趣是，在一种理论中不可能回答的问题可能很容易使用另一种理论，反之亦然，可以在两者中取得进展。 例如，仪表理论的良好理解的特性可能会导致对弦理论的更好理解，从而可以更好地理解量子重力，这长期以来一直是一个未解决的问题。 相反，弦理论可用于探测较低的强耦合方案中的理论。 最终，这可以解释夸克限制的现象（即无法观察到自由夸克的事实），并就其组成夸克的特性而言，对质子，核等的结构产生定量理解。