MSPA-AST: Precision cosmology with galaxies, CMB and 21 cm tomography

AST-0708534 Tegmark近年来，宇宙学取得了惊人的进展。 该项目将继续研究宇宙现象学，开发改进的分析方法，并使用它们来加强宇宙学约束和理论理解。 来自当前和即将进行的实验的更好的数据将用于改善有关中微子，暗物质，暗能量和早期宇宙的知识。 该研究的主要内容是：1）星系团宇宙学，包括使用比以前更小的尺度信息，进行简并破缺和一致性检验; 2）通过发展基于信息论的21 cm层析成像数据分析技术，快速而几乎无损地提取宇宙学信息，包括再电离时代和基础物理学信息，阐明“黑暗时代”; 3）理论和唯象计算，以加强观测与基础理论及其自由参数之间的联系。 一个共同的主题是使用信息论为基础的技术，以解决数学和统计的挑战所带来的海量数据集，特别是管理和建模的不确定性。沿着加强新兴的宇宙学标准模型的基础，这项研究将开发广泛有用的数据和工具，这将迅速公开。 该项目对学生进行培训，并为公开演讲和其他教育推广活动提供充足的机会。 宇宙的起源、演变和命运长期以来一直吸引着公众的想象力，使他们能够在正式和非正式的公共宣传方面开展积极的工作。

AST-0708534TegmarkRecent years have seen spectacular progress in cosmology. This project will continue research in cosmic phenomenology, developing improved analysis methods and using them to sharpen cosmological constraints and theoretical understanding. Better data from current and upcoming experiments will be used to improve knowledge about neutrinos, dark matter, dark energy and the early Universe. The key components of this research are: 1) cosmology with galaxy clustering, including using smaller scale information than before, for degeneracy breaking and consistency testing; 2) illuminating the "dark ages" by developing information theory based techniques for 21 cm tomography data analysis, for fast yet nearly lossless extraction of cosmological information, concerning both the epoch of reionization and fundamental physics; 3) theoretical and phenomenological calculations to strengthen the link between observations and the underlying theories and their free parameters. A common theme is the use of information theory based techniques to tackle the mathematical and statistical challenges posed by massive data sets, particularly for managing and modeling uncertainty.Along with strengthening the foundation for the emerging standard model of cosmology, this research will develop broadly useful data and tools, which will promptly be made publicly available. The project trains students, and offers ample opportunities for public talks and other educational outreach. The origin, evolution and fate of the universe have long captivated the imagination of the general public, allowing for active work in both formal and informal public outreach.