Primordial magnetic fields from metric perturbations

We study the amplification of electromagnetic vacuum fluctuations induced by the evolution of scalar metric perturbations at the end of inflation. Such perturbations break the conformal invariance of Maxwell equations in Friedmann-Robertson-Walker backgrounds and allow the growth of magnetic fields...

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Bibliographic Details
Author: López Maroto, Antonio
Format: article
Publication Date:2001
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/59328
Online Access:https://hdl.handle.net/20.500.14352/59328
Access Level:Open access
Keyword:53
Inhomogeneous cosmologies
Particle-production
Inflation
Universe
Origin
Invariance
Breaking
Creation
Noise
Física (Física)
22 Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/59328
network_acronym_str ES
network_name_str España
repository_id_str
spelling Primordial magnetic fields from metric perturbationsLópez Maroto, Antonio53Inhomogeneous cosmologiesParticle-productionInflationUniverseOriginInvarianceBreakingCreationNoiseFísica (Física)22 FísicaWe study the amplification of electromagnetic vacuum fluctuations induced by the evolution of scalar metric perturbations at the end of inflation. Such perturbations break the conformal invariance of Maxwell equations in Friedmann-Robertson-Walker backgrounds and allow the growth of magnetic fields on super-Hubble scales. We relate the strength of the fields generated by this mechanism with the power spectrum of scalar perturbations and estimate the amplification on galactic scales for different values of the spectral index. Finally we discuss the possible effects of finite conductivity during reheating.American Physical SocietyUniversidad Complutense de Madrid20012001-09-2420012001-09-24journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59328reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/593282026-06-02T12:44:21Z
dc.title.none.fl_str_mv Primordial magnetic fields from metric perturbations
title Primordial magnetic fields from metric perturbations
spellingShingle Primordial magnetic fields from metric perturbations
López Maroto, Antonio
53
Inhomogeneous cosmologies
Particle-production
Inflation
Universe
Origin
Invariance
Breaking
Creation
Noise
Física (Física)
22 Física
title_short Primordial magnetic fields from metric perturbations
title_full Primordial magnetic fields from metric perturbations
title_fullStr Primordial magnetic fields from metric perturbations
title_full_unstemmed Primordial magnetic fields from metric perturbations
title_sort Primordial magnetic fields from metric perturbations
dc.creator.none.fl_str_mv López Maroto, Antonio
author López Maroto, Antonio
author_facet López Maroto, Antonio
author_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Inhomogeneous cosmologies
Particle-production
Inflation
Universe
Origin
Invariance
Breaking
Creation
Noise
Física (Física)
22 Física
topic 53
Inhomogeneous cosmologies
Particle-production
Inflation
Universe
Origin
Invariance
Breaking
Creation
Noise
Física (Física)
22 Física
description We study the amplification of electromagnetic vacuum fluctuations induced by the evolution of scalar metric perturbations at the end of inflation. Such perturbations break the conformal invariance of Maxwell equations in Friedmann-Robertson-Walker backgrounds and allow the growth of magnetic fields on super-Hubble scales. We relate the strength of the fields generated by this mechanism with the power spectrum of scalar perturbations and estimate the amplification on galactic scales for different values of the spectral index. Finally we discuss the possible effects of finite conductivity during reheating.
publishDate 2001
dc.date.none.fl_str_mv 2001
2001-09-24
2001
2001-09-24
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/59328
url https://hdl.handle.net/20.500.14352/59328
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
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
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415433172418560
score 15,300719

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