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The Large-Scale Structure of the Universe

<!--HTML-->It is expected that measurements of the large-scale structure of the Universe will soon become our leading sources of fundamental cosmological information. In this talk, I will review some of the major progress, both theoretical and data-oriented, that has been made in understandin...

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Autor principal: Lewandowski, Matthew
Lenguaje:eng
Publicado: 2023
Materias:
Acceso en línea:http://cds.cern.ch/record/2860695
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author Lewandowski, Matthew
author_facet Lewandowski, Matthew
author_sort Lewandowski, Matthew
collection CERN
description <!--HTML-->It is expected that measurements of the large-scale structure of the Universe will soon become our leading sources of fundamental cosmological information. In this talk, I will review some of the major progress, both theoretical and data-oriented, that has been made in understanding the physics of galaxy clustering, as well as what we might hope to learn about new physics from these measurements. As a main example, I will discuss our recent analysis of the BOSS galaxy-clustering power spectrum and bispectrum data using the one-loop predictions from the Effective Field Theory of Large-Scale Structure (EFTofLSS), where we find impressive constraints on cosmological parameters. Overall, we find that including higher-order predictions, which allows us to analyze the data to smaller length scales and access more physical modes, significantly reduces the error bars of cosmological parameters. Even with this existing BOSS data, some of our results are competitive with CMB constraints. This points to exciting, even stronger constraints from future surveys such as DESI, Euclid, and MegaMapper, and opens the door to exploring exciting new physics with precision large-scale structure measurements.
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institution Organización Europea para la Investigación Nuclear
language eng
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spelling cern-28606952023-06-02T21:37:31Zhttp://cds.cern.ch/record/2860695engLewandowski, MatthewThe Large-Scale Structure of the UniverseThird EuCAPT Annual SymposiumEucapt Conferences<!--HTML-->It is expected that measurements of the large-scale structure of the Universe will soon become our leading sources of fundamental cosmological information. In this talk, I will review some of the major progress, both theoretical and data-oriented, that has been made in understanding the physics of galaxy clustering, as well as what we might hope to learn about new physics from these measurements. As a main example, I will discuss our recent analysis of the BOSS galaxy-clustering power spectrum and bispectrum data using the one-loop predictions from the Effective Field Theory of Large-Scale Structure (EFTofLSS), where we find impressive constraints on cosmological parameters. Overall, we find that including higher-order predictions, which allows us to analyze the data to smaller length scales and access more physical modes, significantly reduces the error bars of cosmological parameters. Even with this existing BOSS data, some of our results are competitive with CMB constraints. This points to exciting, even stronger constraints from future surveys such as DESI, Euclid, and MegaMapper, and opens the door to exploring exciting new physics with precision large-scale structure measurements.oai:cds.cern.ch:28606952023
spellingShingle Eucapt Conferences
Lewandowski, Matthew
The Large-Scale Structure of the Universe
title The Large-Scale Structure of the Universe
title_full The Large-Scale Structure of the Universe
title_fullStr The Large-Scale Structure of the Universe
title_full_unstemmed The Large-Scale Structure of the Universe
title_short The Large-Scale Structure of the Universe
title_sort large-scale structure of the universe
topic Eucapt Conferences
url http://cds.cern.ch/record/2860695
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