Gravitational Physics from the Cosmic Microwave Background

普林斯顿引力小组将通过对宇宙微波背景辐射的实验研究，继续探索引力物理学和宇宙学。宇宙微波背景辐射是宇宙大爆炸的炽热余辉。对宇宙微波背景辐射的测量构成了标准宇宙学模型的基石。我们的工作建立在以前的工作，其特点是温度和偏振各向异性（辐射的空间分布的变化），并奠定了基础的WMAP卫星。 我们将测量精细的角尺度温度各向异性（l1000）和极化，以了解暗能量，暗物质，中微子质量和宇宙的电离历史。从我们的实验结果预计将直接告知我们的通货膨胀的时代。拟议的研究的更广泛的影响，包括学生的实质性教育发展，持续的公共宣传，以及上述的科学影响。 普林斯顿大学的研究小组将继续为本科生和研究生开展积极的实践研究项目。例如，我们在过去三年中指导了40多名暑期学生，其中包括14名妇女和少数民族。小组成员将继续给予频繁的公开讲座和采访，指导物理学生的当地社会，与当地学校团体互动，开发新的类，并维护公共网页。

The Princeton Gravity Group will continue its exploration of gravitational physics and cosmology through the experimental study of the cosmic microwave background (CMB) radiation. The CMB is the fiery afterglow of the Big Bang. Measurements of the CMB form the bedrock foundation of the standard cosmological model. Our work builds on and extends previous work that characterized the temperature and polarization anisotropies (variations in the spatial distribution of the radiation) and laid the foundation for the WMAP satellite. We will measure the fine angular scale temperature anisotropy (l1000) and polarization to understand the dark energy, dark matter, mass of the neutrino, and ionization history of the universe. Results from our experiments are anticipated to directly inform us of the inflationary epoch.The broader impacts of the proposed research include substantial educational development for students, continued public outreach, and the scientific impacts mentioned above. The Princeton group will continue its vigorous program of hands-on research for undergraduates and graduate students. As one example, we have supervised over 40 summer students over the past three years, including 14 women and minorities. Group members will continue to give frequent public talks and interviews, mentor the local Society of Physics Students, interact with local school groups, develop new classes, and maintain public web pages.