Topics in cosmology — clearly explained by means of simple examples

This is a very comprehensible review of some key issues in modern cosmology. Simple mathematical examples and analogies are used, whenever available. The starting point is the well-known Big Bang cosmology (BBC). We deal with the mathematical singularities appearing in this theory and discuss some w...

Descripción completa

Detalles Bibliográficos
Autores: Haro Cases, Jaume|||0000-0002-5705-2405, Elizalde Rius, Emilio
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/366576
Acceso en línea:https://hdl.handle.net/2117/366576
https://dx.doi.org/10.3390/universe8030166
Access Level:acceso abierto
Palabra clave:Cosmology
Inflation
Cosmic acceleration
Reheating
Cosmologia
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica::Cosmologia i cosmogonia
id ES_938b9b7bbf50c6e2a42fe03cee6f7639
oai_identifier_str oai:upcommons.upc.edu:2117/366576
network_acronym_str ES
network_name_str España
repository_id_str
spelling Topics in cosmology — clearly explained by means of simple examplesHaro Cases, Jaume|||0000-0002-5705-2405Elizalde Rius, EmilioCosmologyCosmologyInflationCosmic accelerationReheatingCosmologiaÀrees temàtiques de la UPC::Física::Astronomia i astrofísica::Cosmologia i cosmogoniaThis is a very comprehensible review of some key issues in modern cosmology. Simple mathematical examples and analogies are used, whenever available. The starting point is the well-known Big Bang cosmology (BBC). We deal with the mathematical singularities appearing in this theory and discuss some ways to remove them. Next, and before introducing the inflationary paradigm by means of clear examples, we review the horizon and flatness problems of the old BBC model. We then consider the current cosmic acceleration and, as a procedure to deal with both periods of cosmic acceleration in a unified way, we study quintessential inflation. Finally, the reheating stage of the universe via gravitational particle production, which took place after inflation ended, is discussed in clear mathematical terms, by involving the so-called a-attractors in the context of quintessential inflation"J.d.H. is supported by grant MTM2017-84214-C2-1-P, funded by MCIN/AEI/10.13039/501100011033, and by “ERDF A way of making Europe”. E.E. is supported by MICINN (Spain), project PID2019-104397GB-I00, of the Spanish State Research Agency program AEI/10.13039/501100011033, and by the program Unidad de Excelencia María de Maeztu CEX2020-001058-M. Both authors are also supported in part by the Catalan Government, AGAUR project 2017-SGR-247"Peer Reviewed20222022-03-0120222022-04-29journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/366576https://dx.doi.org/10.3390/universe8030166reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MTM2017-84214-C2-1-P ECUACIONES EN DERIVADAS PARCIALES: PROBLEMAS DE REACCION-DIFUSION, INTEGRO-DIFERENCIALES Y GEOMETRICOSopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttps://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3665762026-05-27T15:37:01Z
dc.title.none.fl_str_mv Topics in cosmology — clearly explained by means of simple examples
title Topics in cosmology — clearly explained by means of simple examples
spellingShingle Topics in cosmology — clearly explained by means of simple examples
Haro Cases, Jaume|||0000-0002-5705-2405
Cosmology
Cosmology
Inflation
Cosmic acceleration
Reheating
Cosmologia
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica::Cosmologia i cosmogonia
title_short Topics in cosmology — clearly explained by means of simple examples
title_full Topics in cosmology — clearly explained by means of simple examples
title_fullStr Topics in cosmology — clearly explained by means of simple examples
title_full_unstemmed Topics in cosmology — clearly explained by means of simple examples
title_sort Topics in cosmology — clearly explained by means of simple examples
dc.creator.none.fl_str_mv Haro Cases, Jaume|||0000-0002-5705-2405
Elizalde Rius, Emilio
author Haro Cases, Jaume|||0000-0002-5705-2405
author_facet Haro Cases, Jaume|||0000-0002-5705-2405
Elizalde Rius, Emilio
author_role author
author2 Elizalde Rius, Emilio
author2_role author
dc.subject.none.fl_str_mv Cosmology
Cosmology
Inflation
Cosmic acceleration
Reheating
Cosmologia
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica::Cosmologia i cosmogonia
topic Cosmology
Cosmology
Inflation
Cosmic acceleration
Reheating
Cosmologia
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica::Cosmologia i cosmogonia
description This is a very comprehensible review of some key issues in modern cosmology. Simple mathematical examples and analogies are used, whenever available. The starting point is the well-known Big Bang cosmology (BBC). We deal with the mathematical singularities appearing in this theory and discuss some ways to remove them. Next, and before introducing the inflationary paradigm by means of clear examples, we review the horizon and flatness problems of the old BBC model. We then consider the current cosmic acceleration and, as a procedure to deal with both periods of cosmic acceleration in a unified way, we study quintessential inflation. Finally, the reheating stage of the universe via gravitational particle production, which took place after inflation ended, is discussed in clear mathematical terms, by involving the so-called a-attractors in the context of quintessential inflation
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-03-01
2022
2022-04-29
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/366576
https://dx.doi.org/10.3390/universe8030166
url https://hdl.handle.net/2117/366576
https://dx.doi.org/10.3390/universe8030166
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MTM2017-84214-C2-1-P ECUACIONES EN DERIVADAS PARCIALES: PROBLEMAS DE REACCION-DIFUSION, INTEGRO-DIFERENCIALES Y GEOMETRICOS
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869413606376865792
score 15.300719

Similares en LA Referencia