Evolution mapping: A new approach to describe matter clustering in the non-linear regime

Autores
Sanchez, Ariel Guillermo; Ruiz, Andrés Nicolás; Gonzalez Jara, Jenny; Padilla, Nelson David
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a new approach to describe statistics of the non-linear matter density field that exploits a degeneracy in the impact of different cosmological parameters on the linear dimensionless matter power spectrum, Δ2L(k). We classify all cosmological parameters into two groups, shape parameters, which determine the shape of Δ2L(k), and evolution parameters, which only affect its amplitude at any given redshift. With this definition, the time evolution of Δ2L(k) in models with identical shape parameters but different evolution parameters can be mapped from one to the other by relabelling the redshifts that correspond to the same clustering amplitude, which we characterize by the linear mass fluctuation in spheres of radius 12 Mpc, σ12(z). We use N-body simulations to show that the same evolution-mapping relation gives a good description of the non-linear power spectrum, the halo mass function, or the full density field. The deviations from the exact degeneracy are the result of the different structure formation histories experienced by each model to reach the same clustering amplitude and can be accurately described in terms of differences in the suppression factor g(a) = D(a)/a. These relations can be used to drastically reduce the number of parameters required to describe the cosmology dependence of the power spectrum. We show how this can help to speed up the inference of parameter constraints from cosmological observations. We also present a new design of an emulator of the non-linear power spectrum whose predictions can be adapted to an arbitrary choice of evolution parameters and redshift.
Fil: Sanchez, Ariel Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Max Planck Institute For Extraterrestrial Physics; Alemania. Ludwig Maximilians Universitat; Alemania
Fil: Ruiz, Andrés Nicolás. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Gonzalez Jara, Jenny. Pontificia Universidad Católica de Chile; Chile
Fil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Materia
COSMOLOGY: THEORY
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: NUMERICAL
METHODS: STATISTICAL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/202735
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/202735
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network_name_str CONICET Digital (CONICET)
spelling Evolution mapping: A new approach to describe matter clustering in the non-linear regimeSanchez, Ariel GuillermoRuiz, Andrés NicolásGonzalez Jara, JennyPadilla, Nelson DavidCOSMOLOGY: THEORYLARGE-SCALE STRUCTURE OF UNIVERSEMETHODS: NUMERICALMETHODS: STATISTICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a new approach to describe statistics of the non-linear matter density field that exploits a degeneracy in the impact of different cosmological parameters on the linear dimensionless matter power spectrum, Δ2L(k). We classify all cosmological parameters into two groups, shape parameters, which determine the shape of Δ2L(k), and evolution parameters, which only affect its amplitude at any given redshift. With this definition, the time evolution of Δ2L(k) in models with identical shape parameters but different evolution parameters can be mapped from one to the other by relabelling the redshifts that correspond to the same clustering amplitude, which we characterize by the linear mass fluctuation in spheres of radius 12 Mpc, σ12(z). We use N-body simulations to show that the same evolution-mapping relation gives a good description of the non-linear power spectrum, the halo mass function, or the full density field. The deviations from the exact degeneracy are the result of the different structure formation histories experienced by each model to reach the same clustering amplitude and can be accurately described in terms of differences in the suppression factor g(a) = D(a)/a. These relations can be used to drastically reduce the number of parameters required to describe the cosmology dependence of the power spectrum. We show how this can help to speed up the inference of parameter constraints from cosmological observations. We also present a new design of an emulator of the non-linear power spectrum whose predictions can be adapted to an arbitrary choice of evolution parameters and redshift.Fil: Sanchez, Ariel Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Max Planck Institute For Extraterrestrial Physics; Alemania. Ludwig Maximilians Universitat; AlemaniaFil: Ruiz, Andrés Nicolás. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Gonzalez Jara, Jenny. Pontificia Universidad Católica de Chile; ChileFil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaOxford University Press2022-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/202735Sanchez, Ariel Guillermo; Ruiz, Andrés Nicolás; Gonzalez Jara, Jenny; Padilla, Nelson David; Evolution mapping: A new approach to describe matter clustering in the non-linear regime; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 514; 4; 8-2022; 5673-56850035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/514/4/5673/6609938info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1656info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/2108.12710info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:19:25Zoai:ri.conicet.gov.ar:11336/202735instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-12-23 13:19:25.783CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evolution mapping: A new approach to describe matter clustering in the non-linear regime
title Evolution mapping: A new approach to describe matter clustering in the non-linear regime
spellingShingle Evolution mapping: A new approach to describe matter clustering in the non-linear regime
Sanchez, Ariel Guillermo
COSMOLOGY: THEORY
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: NUMERICAL
METHODS: STATISTICAL
title_short Evolution mapping: A new approach to describe matter clustering in the non-linear regime
title_full Evolution mapping: A new approach to describe matter clustering in the non-linear regime
title_fullStr Evolution mapping: A new approach to describe matter clustering in the non-linear regime
title_full_unstemmed Evolution mapping: A new approach to describe matter clustering in the non-linear regime
title_sort Evolution mapping: A new approach to describe matter clustering in the non-linear regime
dc.creator.none.fl_str_mv Sanchez, Ariel Guillermo
Ruiz, Andrés Nicolás
Gonzalez Jara, Jenny
Padilla, Nelson David
author Sanchez, Ariel Guillermo
author_facet Sanchez, Ariel Guillermo
Ruiz, Andrés Nicolás
Gonzalez Jara, Jenny
Padilla, Nelson David
author_role author
author2 Ruiz, Andrés Nicolás
Gonzalez Jara, Jenny
Padilla, Nelson David
author2_role author
author
author
dc.subject.none.fl_str_mv COSMOLOGY: THEORY
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: NUMERICAL
METHODS: STATISTICAL
topic COSMOLOGY: THEORY
LARGE-SCALE STRUCTURE OF UNIVERSE
METHODS: NUMERICAL
METHODS: STATISTICAL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a new approach to describe statistics of the non-linear matter density field that exploits a degeneracy in the impact of different cosmological parameters on the linear dimensionless matter power spectrum, Δ2L(k). We classify all cosmological parameters into two groups, shape parameters, which determine the shape of Δ2L(k), and evolution parameters, which only affect its amplitude at any given redshift. With this definition, the time evolution of Δ2L(k) in models with identical shape parameters but different evolution parameters can be mapped from one to the other by relabelling the redshifts that correspond to the same clustering amplitude, which we characterize by the linear mass fluctuation in spheres of radius 12 Mpc, σ12(z). We use N-body simulations to show that the same evolution-mapping relation gives a good description of the non-linear power spectrum, the halo mass function, or the full density field. The deviations from the exact degeneracy are the result of the different structure formation histories experienced by each model to reach the same clustering amplitude and can be accurately described in terms of differences in the suppression factor g(a) = D(a)/a. These relations can be used to drastically reduce the number of parameters required to describe the cosmology dependence of the power spectrum. We show how this can help to speed up the inference of parameter constraints from cosmological observations. We also present a new design of an emulator of the non-linear power spectrum whose predictions can be adapted to an arbitrary choice of evolution parameters and redshift.
Fil: Sanchez, Ariel Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Max Planck Institute For Extraterrestrial Physics; Alemania. Ludwig Maximilians Universitat; Alemania
Fil: Ruiz, Andrés Nicolás. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Gonzalez Jara, Jenny. Pontificia Universidad Católica de Chile; Chile
Fil: Padilla, Nelson David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
description We present a new approach to describe statistics of the non-linear matter density field that exploits a degeneracy in the impact of different cosmological parameters on the linear dimensionless matter power spectrum, Δ2L(k). We classify all cosmological parameters into two groups, shape parameters, which determine the shape of Δ2L(k), and evolution parameters, which only affect its amplitude at any given redshift. With this definition, the time evolution of Δ2L(k) in models with identical shape parameters but different evolution parameters can be mapped from one to the other by relabelling the redshifts that correspond to the same clustering amplitude, which we characterize by the linear mass fluctuation in spheres of radius 12 Mpc, σ12(z). We use N-body simulations to show that the same evolution-mapping relation gives a good description of the non-linear power spectrum, the halo mass function, or the full density field. The deviations from the exact degeneracy are the result of the different structure formation histories experienced by each model to reach the same clustering amplitude and can be accurately described in terms of differences in the suppression factor g(a) = D(a)/a. These relations can be used to drastically reduce the number of parameters required to describe the cosmology dependence of the power spectrum. We show how this can help to speed up the inference of parameter constraints from cosmological observations. We also present a new design of an emulator of the non-linear power spectrum whose predictions can be adapted to an arbitrary choice of evolution parameters and redshift.
publishDate 2022
dc.date.none.fl_str_mv 2022-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/202735
Sanchez, Ariel Guillermo; Ruiz, Andrés Nicolás; Gonzalez Jara, Jenny; Padilla, Nelson David; Evolution mapping: A new approach to describe matter clustering in the non-linear regime; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 514; 4; 8-2022; 5673-5685
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/202735
identifier_str_mv Sanchez, Ariel Guillermo; Ruiz, Andrés Nicolás; Gonzalez Jara, Jenny; Padilla, Nelson David; Evolution mapping: A new approach to describe matter clustering in the non-linear regime; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 514; 4; 8-2022; 5673-5685
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/514/4/5673/6609938
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1656
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/2108.12710
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.952241

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