Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14249
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dc.contributor.authorBae, Jeong-Myeong-
dc.contributor.authorHong, Sungwook E.-
dc.contributor.authorZoe, Heeseung-
dc.date.accessioned2024-01-30T09:24:41Z-
dc.date.available2024-01-30T09:24:41Z-
dc.date.issued2024-
dc.identifier.issn0264-9381-
dc.identifier.issn1361-6382-
dc.identifier.urihttps://doi.org/10.1088/1361-6382/ad1214-
dc.identifier.urihttps://hdl.handle.net/11147/14249-
dc.description.abstractWe consider a simple system consisting of matter, radiation and vacuum components to model the impact of thermal inflation on the evolution of primordial perturbations. The vacuum energy magnifies the primordial modes entering the horizon before its domination, making them potentially observable, and the resulting transfer function reflects the phase changes and energy contents. To determine the transfer function, we follow the curvature perturbation from well outside the horizon during radiation domination to well outside the horizon during vacuum domination and evaluate it on a constant radiation density hypersurface, as is appropriate for the case of thermal inflation. The shape of the transfer function is determined by the ratio of vacuum energy to radiation at matter-radiation equality, which we denote by upsilon , and has two characteristic scales, ka and kb , corresponding to the horizon sizes at matter radiation equality and the beginning of the inflation, respectively. If upsilon MUCH LESS-THAN1 , the Universe experiences radiation, matter and vacuum domination eras and the transfer function is flat for kMUCH LESS-THANkb , oscillates with amplitude 1/5 for kbMUCH LESS-THANkMUCH LESS-THANka and oscillates with amplitude 1 for k >> ka . For upsilon >> 1 , the matter domination era disappears, and the transfer function reduces to being flat for kMUCH LESS-THANkb and oscillating with amplitude 1 for k >> kb .en_US
dc.description.sponsorshipThe authors thank Ewan Stewart for his helpful discussion and advice. H Z thanks Emre Onur Kahya, and the Department of Physics Engineering at Istanbul Technical University and Korea Astronomy and Space Science Institute for the hospitality. This work was supported by the DGIST-UGRP Grant. S E H was supported by the project 'Understanding Dark Universe Using Large Scale Structure of the Universe', funded by the Ministry of Science.en_US
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.relation.ispartofClassical and Quantum Gravityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectInflationen_US
dc.subjectThermal inflationen_US
dc.subjectCurvature perturbationen_US
dc.subjectPower spectrumen_US
dc.titleModeling cosmological perturbations of thermal inflationen_US
dc.typeArticleen_US
dc.authorid0000-0003-4601-075X-
dc.institutionauthorZoe, Heeseung-
dc.departmentİzmir Institute of Technology. Physicsen_US
dc.identifier.volume41en_US
dc.identifier.issue1en_US
dc.identifier.wosWOS:001124269400001en_US
dc.identifier.scopus2-s2.0-85180584199en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1088/1361-6382/ad1214-
dc.authorscopusid57212559214-
dc.authorscopusid56108601200-
dc.authorscopusid25650925100-
dc.identifier.wosqualityQ2-
dc.identifier.scopusqualityQ1-
item.grantfulltextopen-
item.openairetypeArticle-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
crisitem.author.dept04.05. Department of Pyhsics-
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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