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Cosmology at a crossroads: Towards a more complex Universe

处于十字路口的宇宙学：迈向更复杂的宇宙

基本信息

批准号：
2008696
负责人：
Francis-Yan Cyr-Racine
金额：
$ 25.19万
依托单位：
University of New Mexico
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2023-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2008696&HistoricalAwards=false
关键词：
Cosmology crossroads Towards more complex

项目摘要

Our current model for the content and structure of our Universe appears incapable of jointly explaining the vast array of observations made possible by current state-of-the-art telescopes. Intriguingly, these discrepancies might be the first hints that our current cosmological model is missing something fundamental. This project will explore the most promising areas where new physics could potentially play an important role in shaping the evolution of our Universe. In particular, it will focus on the possible role that “dark matter”, “dark energy”, and neutrinos could play in resolving the current discrepancies, as well as their possible interconnections. As part of this research, training will be provided to a graduate student and the principal investigator will also collaborate with a technologist to create an immersive interactive experience aimed at the general public that helps visualize the importance of dark matter to our Universe. Motivated by current tensions between different cosmological data sets, this team will perform a systematic study for the presence of new physics in the dark matter and neutrino sectors, their potential connection to each other, and their possible relation to a dark energy-like scalar field sector. Focusing exclusively on models that have natural particle physics realization and using analysis techniques that are robust to the introduction of physics beyond the standard Lambda Cold Dark Matter model, this project will determine whether well-motivated new physics related to dark matter, neutrinos, or dark energy could be the cause of the current tensions in cosmology.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.

我们目前的宇宙内容和结构模型似乎无法共同解释目前最先进的望远镜所能进行的大量观测。有趣的是，这些差异可能是我们目前的宇宙学模型缺少一些基本东西的第一个暗示。该项目将探索最有前途的领域，新物理学可能在塑造我们宇宙的演变中发挥重要作用。特别是，它将集中在“暗物质”，“暗能量”和中微子可能在解决当前的差异中发挥的作用，以及它们可能的相互联系。作为这项研究的一部分，将为一名研究生提供培训，首席研究员还将与一名技术专家合作，为公众创造一种身临其境的互动体验，帮助可视化暗物质对我们宇宙的重要性。受当前不同宇宙学数据集之间紧张关系的影响，该团队将对暗物质和中微子扇区中新物理的存在、它们之间的潜在联系以及它们与暗能量类标量场扇区的可能关系进行系统研究。该项目专门关注具有自然粒子物理实现的模型，并使用对标准Lambda冷暗物质模型之外的物理引入具有鲁棒性的分析技术，该项目将确定是否有动机良好的新物理与暗物质，中微子，这个奖项反映了NSF的法定使命，被认为是值得支持的通过使用基金会的知识价值和更广泛的影响审查标准进行评估。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Atacama Cosmology Telescope: The persistence of neutrino self-interaction in cosmological measurements

阿塔卡马宇宙学望远镜：宇宙学测量中中微子自相互作用的持久性

DOI：
10.1103/physrevd.109.043501
发表时间：
2024
期刊：
Physical Review D
影响因子：
5
作者：
Kreisch, Christina D.;Park, Minsu;Calabrese, Erminia;Cyr-Racine, Francis-Yan;An, Rui;Bond, J. Richard;Doré, Olivier;Dunkley, Jo;Gallardo, Patricio;Gluscevic, Vera
通讯作者：
Gluscevic, Vera

Cosmic Expansion: A mini review of the Hubble-Lemaitre tension

宇宙膨胀：哈勃-勒梅特张力的迷你回顾