Fundamental physics from the large-scale structure of the Universe

宇宙大尺度结构的基础物理学

基本信息

批准号：
ST/W004755/1
负责人：
Eva-Maria Mueller
金额：
$ 67.39万
依托单位：
University of Sussex
依托单位国家：
英国
项目类别：
Fellowship
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FW004755%2F1
关键词：
Fundamental physics large scale structure

项目摘要

What happened in the first second after the Big Bang? Why is the expansion of the Universe accelerating? And what is dark energy?Our Universe still holds many mysteries, from its earliest beginnings to its current accelerated expansion. While studying the origin and evolution of our Universe is exciting by itself, what especially drives me is the link of cosmology to fundamental physical theories. The Universe is the largest laboratory we have to push our understanding of the laws of physics!While the physics of the early Universe and the underlying cause of dark energy remains puzzling, what is certain is that we can study both through the clustering of galaxies in our Universe. My research focuses on analysing the large scale structure of galaxies in our Universe to uncover the underlying nature of dark energy and determine the physical theory that drives the expansion of the Universe milli-seconds after the Big Bang.The Dark Energy Spectroscopic Instrument (DESI) is designed to tackle these questions: after more than a decade of development, DESI achieved first light in 2019. This year DESI began its 5-year survey mapping the 3D positions of tens of millions of galaxies across almost half the sky. I joined DESI during my PhD and am excited to see the project evolve from being a mere proposal to finally start my research with its first year of data that will have pivotal impact on cosmology and our understanding of fundamental physics.

大爆炸之后的第一秒发生了什么？为什么宇宙的扩展会加速？什么是暗能量？我们的宇宙仍然拥有许多谜团，从最早的开始到目前的加速扩张。在研究宇宙的起源和演变本身令人兴奋的同时，特别驱动我的是宇宙学与基本物理理论的联系。宇宙是我们必须推动对物理定律的理解的最大实验室！而早期宇宙的物理学和黑暗能量的根本原因仍然令人困惑，可以肯定的是，我们可以通过在星系中的星系进行研究我们的宇宙。我的研究重点是分析宇宙中星系的大规模结构，以揭示黑能的潜在性质，并确定大爆炸后驱动宇宙毫米秒膨胀的物理理论。深色能量光谱仪器（DESI）旨在解决这些问题：Desi在发展了十多年之后，在2019年获得了第一光。今年，DESI开始了5年的调查，绘制了几乎一半的天空中数千万星系的3D位置。我在博士学位期间加入了DESI，很高兴看到该项目从仅仅是一项提出的建议，即最终以其第一年的数据开始研究，这将对宇宙学产生关键的影响以及我们对基本物理学的理解。