Probing Fundamental Physics on Cosmological Scales

探索宇宙尺度的基础物理

• 批准号: 1820775
• 负责人: Matias Zaldarriaga
• 金额: $ 30万
• 依托单位: Institute For Advanced Study
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1820775&HistoricalAwards=false
• 关键词: Probing; Fundamental; Physics; Cosmological; Scales

This award funds the research activities of Professor Matias Zaldarriaga at the Institute for Advanced Study in Princeton, NJ. In the last decades our understanding of the Universe has increased dramatically as a result of a series of measurements by telescopes on the ground and in space that have mapped the distribution of matter in a large fraction of our observable Universe. We have a very detailed standard model of Cosmology that can explain these observations, but to do so requires that the cosmos be filled with additional components, such as the so-called dark matter and dark energy, that have not been seen in the laboratory. To try to understand these findings, a new set of telescopes are being constructed and dedicated observational programs are being planned for the upcoming decade. In his research, Professor Zaldarriaga aims to develop and expand the necessary tools to extract all the information available in the upcoming surveys and experiments. The funded research also involves a series of theoretical projects to improve our understanding of the very early Universe, the properties of dark matter and dark energy, as well as the effects of massive neutrinos on the evolution of structure in our Universe. As such, this project is in the national interest by furthering the development of basic science in the United States. This project is also envisioned to have significant broader impacts. Professor Zaldarriaga will involve graduate students and postdocs in this research, and thereby provide critical training for junior physicists beginning research in this field. Professor Zaldarriaga also intends to continue to give public lectures on his research results and run his lecture course on modern Cosmology for seniors at the Evergreen Forum of the Princeton Senior Resource center.More technically, Professor Zaldarriaga will use the so-called Effective theory of Large-Scale Structure to study the effects of neutrinos in the development of structure in the Universe, and in general to try to understand what properties of the two-point correlation function and higher-point statistics are robust against the late-time non-linear evolution. Professor Zaldarriaga will develop new techniques to search for primordial non-Gaussianity, one of the important sources of information about the very early Universe, and will explore new mechanisms to create gravitational waves in the early Universe and new probes to try to find them.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项资助新泽西州普林斯顿高等研究院马蒂亚斯·扎达尔里亚加教授的研究活动。 在过去的几十年里，由于地面和太空望远镜进行了一系列测量，我们对宇宙的了解急剧增加，这些测量绘制了我们可观测宇宙很大一部分中物质的分布图。我们有一个非常详细的宇宙学标准模型可以解释这些观测结果，但要做到这一点需要宇宙中充满实验室中未曾见过的额外成分，例如所谓的暗物质和暗能量。为了试图了解这些发现，正在建造一套新的望远镜，并计划在未来十年进行专门的观测计划。 在他的研究中，扎尔达里亚加教授的目标是开发和扩展必要的工具，以提取即将进行的调查和实验中可用的所有信息。资助的研究还涉及一系列理论项目，以提高我们对早期宇宙、暗物质和暗能量的特性以及大质量中微子对宇宙结构演化的影响的理解。 因此，该项目通过促进美国基础科学的发展符合国家利益。该项目预计还将产生更广泛的影响。 扎尔达里亚加教授将让研究生和博士后参与这项研究，从而为开始该领域研究的初级物理学家提供关键培训。 扎尔达里亚加教授还打算继续就他的研究成果进行公开讲座，并在普林斯顿高级资源中心的长青论坛上为高年级学生开设现代宇宙学讲座课程。从技术上讲，扎尔达里亚加教授将使用所谓的“大有效理论” -尺度结构，研究中微子在宇宙结构发展中的影响，并总体上尝试了解两点相关函数和高点统计的哪些属性对后期非线性具有鲁棒性 进化。 扎尔达里亚加教授将开发新技术来寻找原始非高斯性，这是有关早期宇宙的重要信息来源之一，并将探索在早期宇宙中产生引力波的新机制以及尝试寻找它们的新探测器。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Combining full-shape and BAO analyses of galaxy power spectra: a 1.6% CMB-independent constraint on H 0

组合%20full-shape%20和%20BAO%20analysis%20of%20galaxy%20power%20光谱：%20a%201.6%%20CMB独立%20constraint%20on%20H%200

• DOI: 10.1088/1475-7516/2020/05/032
• 发表时间: 2020-05
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Philcox, Oliver H.E.;Ivanov, Mikhail M.;Simonović, Marko;Zaldarriaga, Matias
• 通讯作者: Zaldarriaga, Matias

Primordial features from linear to nonlinear scales

从线性到非线性尺度的原始特征

• DOI: 10.1103/physrevresearch.1.033209
• 发表时间: 2019-06-20
• 期刊: arXiv: Cosmology and Nongalactic Astrophysics
• 作者: F. Beutler;M. Biagetti;D. Green;A. Slosar;B. Wallisch
• 通讯作者: B. Wallisch

Fewer mocks and less noise: Reducing the dimensionality of cosmological observables with subspace projections

更少的模拟和更少的噪音：通过子空间投影降低宇宙学可观测量的维数

• DOI: 10.1103/physrevd.103.043508
• 发表时间: 2020-09-07
• 期刊: Physical Review D
• 影响因子: 5
• 作者: O. Philcox;M. Ivanov;M. Zaldarriaga;M. Simonović;M. Schmittfull
• 通讯作者: M. Schmittfull

Cosmological parameters and neutrino masses from the final Planck and full-shape BOSS data

来自最终普朗克和全形 BOSS 数据的宇宙学参数和中微子质量

• DOI: 10.1103/physrevd.101.083504
• 发表时间: 2020-04
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Ivanov, Mikhail M.;Simonović, Marko;Zaldarriaga, Matias
• 通讯作者: Zaldarriaga, Matias

Cosmological parameters from the BOSS galaxy power spectrum

BOSS 星系功率谱的宇宙学参数

• DOI: 10.1088/1475-7516/2020/05/042
• 发表时间: 2019-09-11
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: M. Ivanov;M. Simonovi'c;M. Zaldarriaga
• 通讯作者: M. Zaldarriaga