Dynamics and Symmetry in Quantum Gravity

量子引力的动力学和对称性

• 批准号: 1205968
• 负责人: Jonathan Engle
• 金额: $ 12万
• 依托单位: Florida Atlantic University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1205968&HistoricalAwards=false
• 关键词: Dynamics; Symmetry; Quantum; Gravity

An important question facing fundamental physics is how the well-tested laws of Einstein's theory of gravity and quantum mechanics become consistent at the Planck scale -- the question of quantum gravity. This question is of central importance in understanding the origin of our universe, the big bang. Most of the remarkable progress on understanding the big bang has occurred in the context of quantum cosmology: quantum models of highly symmetric, and therefore highly simplified, universes. While these models have a structure guided by the full theory of quantum gravity, they are not directly derived from it as a quantum theory. The present award seeks to close this gap. This will solidify confidence in the predictions of quantum cosmology and also permit its insights to be used to guide future developments of quantum gravity itself. A second part of this research aims to further understand the relation between the relatively well-understood canonical formulation of quantum gravity and the Feynman sum-over-histories formulation, in which space and time are treated in a more unified way. By allowing graduate students to participate in frontier physics, and to interact with other research groups, this award will have a broad and long-term impact on the development of future scientists. The results of the research will be disseminated to the scientific community through peer reviewed publication and scientific lectures, as well as to the general public through public lectures and other means.

基本物理学面临的一个重要问题是爱因斯坦重力和量子力学理论的经过良好测试的定律如何在普朗克量表上保持一致 - 量子重力的问题。 这个问题对于理解我们宇宙的起源大爆炸至关重要。 理解大爆炸的大部分进展都是在量子宇宙学的背景下发生的：高度对称的量子模型，因此高度简化了宇宙。 尽管这些模型的结构以量子重力的完整理论为指导，但它们并非直接从中作为量子理论得出。 本奖项旨在缩小这一差距。 这将巩固对量子宇宙学的预测的信心，还允许其见解来指导量子重力本身的未来发展。 这项研究的第二部分旨在进一步理解量子重力的相对良好的规范表述与Feynman Sum-Or-Mo-Erover的配方之间的关系，其中以更统一的方式对待时间和时间。通过允许研究生参加边境物理学并与其他研究小组进行互动，该奖项将对未来科学家的发展产生广泛的长期影响。这项研究的结果将通过同行审查的出版和科学讲座，以及通过公开讲座和其他手段向科学界传播到科学界。