CMB anomalies and the effects of local features of the inflaton potential
ABSTRACT: Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales k = 0.002 Mpc−1 and k = 0.0035 Mpc−1, respectively. We analyze for the first time the effects of a local feature in the inflaton potential to ex...
- Autores:
-
Gallego Cadavid, Alexander
Romano, Antonio Enea
Gariazzo, Stefano
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2017
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/44322
- Acceso en línea:
- https://hdl.handle.net/10495/44322
- Palabra clave:
- Gravedad
Gravity
Análisis espectral
Spectrum analysis
Radiación de fondo
Radiation background
Perturbación (Matemáticas)
Perturbation (mathematics)
Ondas electromagnéticas
Electromagnetic waves
Potencial de inflación
- Rights
- openAccess
- License
- https://creativecommons.org/licenses/by/4.0/
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| dc.title.spa.fl_str_mv |
CMB anomalies and the effects of local features of the inflaton potential |
| title |
CMB anomalies and the effects of local features of the inflaton potential |
| spellingShingle |
CMB anomalies and the effects of local features of the inflaton potential Gravedad Gravity Análisis espectral Spectrum analysis Radiación de fondo Radiation background Perturbación (Matemáticas) Perturbation (mathematics) Ondas electromagnéticas Electromagnetic waves Potencial de inflación |
| title_short |
CMB anomalies and the effects of local features of the inflaton potential |
| title_full |
CMB anomalies and the effects of local features of the inflaton potential |
| title_fullStr |
CMB anomalies and the effects of local features of the inflaton potential |
| title_full_unstemmed |
CMB anomalies and the effects of local features of the inflaton potential |
| title_sort |
CMB anomalies and the effects of local features of the inflaton potential |
| dc.creator.fl_str_mv |
Gallego Cadavid, Alexander Romano, Antonio Enea Gariazzo, Stefano |
| dc.contributor.author.none.fl_str_mv |
Gallego Cadavid, Alexander Romano, Antonio Enea Gariazzo, Stefano |
| dc.contributor.researchgroup.spa.fl_str_mv |
COSMOGRAV Grupo de Fenomenología de Interacciones Fundamentales |
| dc.subject.lemb.none.fl_str_mv |
Gravedad Gravity Análisis espectral Spectrum analysis Radiación de fondo Radiation background Perturbación (Matemáticas) Perturbation (mathematics) Ondas electromagnéticas Electromagnetic waves |
| topic |
Gravedad Gravity Análisis espectral Spectrum analysis Radiación de fondo Radiation background Perturbación (Matemáticas) Perturbation (mathematics) Ondas electromagnéticas Electromagnetic waves Potencial de inflación |
| dc.subject.proposal.spa.fl_str_mv |
Potencial de inflación |
| description |
ABSTRACT: Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales k = 0.002 Mpc−1 and k = 0.0035 Mpc−1, respectively. We analyze for the first time the effects of a local feature in the inflaton potential to explain the observed deviations from scale invariance in the primordial spectrum. We perform a best-fit analysis of the cosmic microwave background (CMB) radiation temperature and polarization data. The effects of the features can improve the agreement with observational data respect to the featureless model. The best-fit local feature affects the primordial curvature spectrum mainly in the region of the bump, leaving the spectrum unaffected on other scales. |
| publishDate |
2017 |
| dc.date.issued.none.fl_str_mv |
2017 |
| dc.date.accessioned.none.fl_str_mv |
2025-01-22T19:56:23Z |
| dc.date.available.none.fl_str_mv |
2025-01-22T19:56:23Z |
| dc.type.spa.fl_str_mv |
Artículo de investigación |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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info:eu-repo/semantics/article |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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Cadavid, A.G., Romano, A.E. & Gariazzo, S. CMB anomalies and the effects of local features of the inflaton potential. Eur. Phys. J. C 77, 242 (2017). https://doi.org/10.1140/epjc/s10052-017-4797-6 |
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1434-6044 |
| dc.identifier.uri.none.fl_str_mv |
https://hdl.handle.net/10495/44322 |
| dc.identifier.doi.none.fl_str_mv |
10.1140/epjc/s10052-017-4797-6 |
| dc.identifier.eissn.none.fl_str_mv |
1434-6052 |
| identifier_str_mv |
Cadavid, A.G., Romano, A.E. & Gariazzo, S. CMB anomalies and the effects of local features of the inflaton potential. Eur. Phys. J. C 77, 242 (2017). https://doi.org/10.1140/epjc/s10052-017-4797-6 1434-6044 10.1140/epjc/s10052-017-4797-6 1434-6052 |
| url |
https://hdl.handle.net/10495/44322 |
| dc.language.iso.spa.fl_str_mv |
eng |
| language |
eng |
| dc.relation.ispartofjournalabbrev.spa.fl_str_mv |
Eur. Phys. J. C. |
| dc.relation.citationendpage.spa.fl_str_mv |
9 |
| dc.relation.citationissue.spa.fl_str_mv |
242 |
| dc.relation.citationstartpage.spa.fl_str_mv |
1 |
| dc.relation.citationvolume.spa.fl_str_mv |
77 |
| dc.relation.ispartofjournal.spa.fl_str_mv |
European Physical Journal C |
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https://creativecommons.org/licenses/by/4.0/ |
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http://creativecommons.org/licenses/by/2.5/co/ |
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9 páginas |
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Springer |
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Les Ulis, Francia |
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Gallego Cadavid, AlexanderRomano, Antonio EneaGariazzo, StefanoCOSMOGRAVGrupo de Fenomenología de Interacciones Fundamentales2025-01-22T19:56:23Z2025-01-22T19:56:23Z2017Cadavid, A.G., Romano, A.E. & Gariazzo, S. CMB anomalies and the effects of local features of the inflaton potential. Eur. Phys. J. C 77, 242 (2017). https://doi.org/10.1140/epjc/s10052-017-4797-61434-6044https://hdl.handle.net/10495/4432210.1140/epjc/s10052-017-4797-61434-6052ABSTRACT: Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales k = 0.002 Mpc−1 and k = 0.0035 Mpc−1, respectively. We analyze for the first time the effects of a local feature in the inflaton potential to explain the observed deviations from scale invariance in the primordial spectrum. We perform a best-fit analysis of the cosmic microwave background (CMB) radiation temperature and polarization data. The effects of the features can improve the agreement with observational data respect to the featureless model. The best-fit local feature affects the primordial curvature spectrum mainly in the region of the bump, leaving the spectrum unaffected on other scales.Unión Europea. Fondo Social Europeo-FSEColombia. Ministerio de Ciencia, Tecnología e Innovación - MinCienciasFondos Nacionales GriegosCOL0147829COL00084239 páginasapplication/pdfengSpringerLes Ulis, Franciahttps://creativecommons.org/licenses/by/4.0/http://creativecommons.org/licenses/by/2.5/co/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2CMB anomalies and the effects of local features of the inflaton potentialArtículo de investigaciónhttp://purl.org/coar/resource_type/c_2df8fbb1https://purl.org/redcol/resource_type/ARThttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionGravedadGravityAnálisis espectralSpectrum analysisRadiación de fondoRadiation backgroundPerturbación (Matemáticas)Perturbation (mathematics)Ondas electromagnéticasElectromagnetic wavesPotencial de inflaciónEur. Phys. J. C.9242177European Physical Journal CARISTEIA II617-2013RoR:03fd5ne08PublicationORIGINALGallegoAlexander_2017_CMB_Inflaton_Potential.pdfGallegoAlexander_2017_CMB_Inflaton_Potential.pdfArtículo de investigaciónapplication/pdf1122377https://bibliotecadigital.udea.edu.co/bitstreams/9d7ceb28-abcd-429f-ad3a-38c9b29530da/downloade747b61a3e56dc880135aaf98149636bMD51trueAnonymousREADCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8927https://bibliotecadigital.udea.edu.co/bitstreams/b006dca7-9f88-492a-b9fb-e9119d1511b9/download1646d1f6b96dbbbc38035efc9239ac9cMD52falseAnonymousREADLICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://bibliotecadigital.udea.edu.co/bitstreams/3d2065d9-3982-41ac-a92c-b877d2009cd0/download8a4605be74aa9ea9d79846c1fba20a33MD53falseAnonymousREADTEXTGallegoAlexander_2017_CMB_Inflaton_Potential.pdf.txtGallegoAlexander_2017_CMB_Inflaton_Potential.pdf.txtExtracted texttext/plain33181https://bibliotecadigital.udea.edu.co/bitstreams/5fc240ff-0cc2-4563-b994-a7b577ef9e93/download2c809ae93f27f2d14b085de33b2ffda8MD54falseAnonymousREADTHUMBNAILGallegoAlexander_2017_CMB_Inflaton_Potential.pdf.jpgGallegoAlexander_2017_CMB_Inflaton_Potential.pdf.jpgGenerated Thumbnailimage/jpeg14582https://bibliotecadigital.udea.edu.co/bitstreams/dd2f7ba9-b46b-4789-b85b-5e0e8412184d/download4b9fa32a4ae345b3336a654dd34571abMD55falseAnonymousREAD10495/44322oai:bibliotecadigital.udea.edu.co:10495/443222025-03-26 21:32:42.819https://creativecommons.org/licenses/by/4.0/open.accesshttps://bibliotecadigital.udea.edu.coRepositorio Institucional de la Universidad de Antioquiaaplicacionbibliotecadigitalbiblioteca@udea.edu.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 |