Superstring Theory, Black Hole Physics and Quantum Gravity

超弦理论、黑洞物理和量子引力

• 批准号: 0703017
• 负责人: Wafic Sabra
• 金额: $ 0.5万
• 依托单位: American University of Beirut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-10-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0703017&HistoricalAwards=false
• 关键词: Superstring; Theory; Black; Hole; Physics

Recently,considerable progress has been made in the study of string theories.It has been realized that superstring theory has a web of duality symmetries relatingnonperturbative effects to perturbative ones. The picture emerging is that there exists afundamental theory, M-theory, that perturbatively, looks like string theory, butnonperturbatively has a very rich structure which includes symmetries relatingperturbative excitations to solitons. Another recent developmenthas been Maldacena's conjectured equivalence between string theory on anti-de Sitterspaces and gauge field theories living on the boundary of these spaces. This ADS/CFTequivalence gave more importance to the study of gravitational anti-de Sitterconfigurations as they provide a tool to the study of quantum gauge field theoriesimportant for particle physics. The main focus of this proposal is: a) to finda complete classification of supersymmetric gravitational backgrounds in variousspacetime dimensions and to understand better the ADS/CFT correspondence and theintricate relation between geometry and supersymmetry. b) to develop ourunderstanding of the nonperturbative theory underlying string theory, and incorporatethe new developments in the study of the phenomenological implications of string theoryto gravitational physics, particle physics and cosmology. The broader implications ofthis proposal are that it will lead to collaboration between string theorists and differentialgeometry. Also the work will take place at the Center for Advanced mathematicalScience at the University of Beirut which will become a Major Center for collaborationsamong scientists in the Middle East.NATIONAL SCIENCE FOUNDATIONDiary NoteProposal:0703017 PI Name:Sabra, WaficPrinted from eJacket: 02/28/07 Page 1 of 1

近年来，弦理论的研究取得了很大的进展，人们认识到超弦理论具有一个把非微扰效应与微扰效应联系起来的对偶对称网络。出现的图像是，存在一个基本理论，M理论，微扰，看起来像弦理论，但非微扰有一个非常丰富的结构，其中包括对称性相关的微扰激发孤子。另一个最近的发展thas是Maldacena的证明等价之间的弦理论的反德西特空间和规范场理论的边界上生活的这些空间。这种ADS/CFL等价性为反德西特组态的研究提供了一个重要的工具，因为它们为研究粒子物理学中重要的量子规范场理论提供了一个工具。该方案的主要目的是：（1）在不同的时空维度上对超对称引力背景进行完全分类，更好地理解ADS/CFT对应以及几何与超对称性之间的复杂关系。B）发展我们对弦论基础的非微扰理论的理解，并阐明弦论对引力物理、粒子物理和宇宙学的唯象意义研究的新进展。这个提议的更广泛的意义在于，它将导致弦理论家和微分几何之间的合作。此外，这项工作将在贝鲁特大学的高级农业科学中心进行，该中心将成为中东科学家合作的主要中心。农业科学基金会日记笔记提案：0703017 PI姓名：Sabra，Wafic打印自eJacket：02/28/07第1页，共1页