Particle and Quantum Field Theory Investigations

粒子和量子场论研究

• 批准号: 0245068
• 负责人: Massimo Porrati
• 金额: $ 115万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-01 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0245068&HistoricalAwards=false
• 关键词: Particle; Quantum; Field; Theory; Investigations

The proposed research involves research in Particle, Fields and Strings. We propose to continue investigating some of the most fundamental questions concerning quantum gravity. The first is the smallness of the vacuum energy. The second is why the vacuum and matter energy densities are comparable today. We are exploring new theories in which General Relativity is modified at very large distances in such a way that the gravitational coupling is wavelength dependent. We propose to study "brane world models" perturbative string theory and quantum gravity. We will also study Anti-de Sitter Conformal Field Theory holography to study fundamental questions of quantum gravity. One question is whether quantum evolutions in the presence of gravity remain unitarity. We are proposing a novel approach to renormalize the electroweak sector of the standard model for use in understanding radiative corrections. We will also perform an updated analysis of neutron beta decay because of new experiments on electron asymmetry in the decay of polarized neutrons.

提议的研究涉及粒子、场和弦的研究。我们建议继续研究有关量子引力的一些最基本的问题。首先是真空能量的小。第二个是为什么今天的真空和物质能量密度是相当的。我们正在探索新的理论，在这些理论中，广义相对论在非常大的距离上进行了修正，使引力耦合与波长有关。我们提出研究“膜世界模型”、微扰弦理论和量子引力。我们也将学习反德西特共形场论全息来研究量子引力的基本问题。一个问题是，在重力存在的情况下，量子进化是否仍然是统一的。我们提出了一种新的方法来重新规范化标准模型的电弱部分，用于理解辐射校正。我们还将对中子衰变进行更新的分析，因为在极化中子衰变中有新的电子不对称实验。