Flux Compactification of M-theory, Cosmology and the Standard Model of Elementary Particles

M理论、宇宙学和基本粒子标准模型的通量紧化

• 批准号: 0505757
• 负责人: Melanie Becker
• 金额: $ 1.52万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-15 至 2006-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0505757&HistoricalAwards=false
• 关键词: Flux; Compactification; theory; Cosmology; Standard

Flux Compactification of M-theory, Cosmology and the Standard Model of Elementary Particles PI: Melanie Becker Institution: University of Maryland One of the goals of this proposal is to construct phenomenologically realistic models that can explain the small and positive cosmological constant recorded by the WMAP data, supernova observations and the HST data. Explaining the value of the cosmological constant has been a challenging problem for theoretical physics since ancient times. String theory does now have the basic tools to address this question very precisely as will be suggested in this proposal. With the same precision it is possible to address cosmology, inflation and the structure of our current universe. A crucial ingredient to answer these questions is string theory and M-theory compactifications with non-vanishing fluxes. Several projects will be suggested along this direction. Due to the duality between supergravity and strongly coupled gauge theories, important issues such as confinement in QCD could in principle be naturally described in this context. The proposed work largely explores the 'landscape' of string theory, the space of dynamically interesting string compactifications. This is an area of growing and long-term significance in string theory. The PI explores in this proposal new types of compactifications, namely heterotic M-theory and non-Kahler, whereas most earlier work has focused on the IIB flux models (which the PI also helped pioneer).

M理论、宇宙学和基本粒子标准模型的通量紧致化 PI：Melanie Becker 机构：马里兰大学 该提案的目标之一是构建唯象现实模型，可以解释 WMAP 数据、超新星观测和 HST 数据记录的小而正的宇宙学常数。解释宇宙常数的值自古以来一直是理论物理学的一个具有挑战性的问题。弦理论现在确实拥有基本工具来非常精确地解决这个问题，正如本提案中所建议的那样。以同样的精度，可以解决宇宙学、通货膨胀和当前宇宙的结构问题。回答这些问题的一个关键因素是弦理论和具有非零通量的 M 理论紧化。将沿着这个方向提出几个项目。由于超引力和强耦合规范理论之间的对偶性，诸如 QCD 中的约束之类的重要问题原则上可以在这种情况下自然地描述。所提出的工作主要探讨了弦理论的“景观”，即动态有趣的弦压缩空间。这是弦理论中一个日益重要且具有长期意义的领域。 PI 在该提案中探索了新型紧化，即杂质 M 理论和非卡勒理论，而大多数早期工作都集中在 IIB 通量模型（PI 也帮助开创了该模型）。