Completely dark matter from rapid-turn multifield inflation

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dc.citation.articleNumber181en_US
dc.citation.journalTitleJournal of High Energy Physicsen_US
dc.citation.volumeNumber2023en_US
dc.contributor.authorKolb, Edward W.en_US
dc.contributor.authorLong, Andrew J.en_US
dc.contributor.authorMcDonough, Evanen_US
dc.contributor.authorPayeur, Guillaumeen_US
dc.date.accessioned2023-03-10T19:04:09Zen_US
dc.date.available2023-03-10T19:04:09Zen_US
dc.date.issued2023en_US
dc.description.abstractWe study cosmological gravitational particle production as applied to “rapid-turn” models of inflation involving two scalar fields. We are interested in the production of massive spin-0 particles that only interact gravitationally and provide a candidate for the dark matter. Specifically, we study two models of rapid-turn multifield inflation, motivated in part by the de Sitter swampland conjecture, that are distinguished by the curvature of field space and the presence or absence of field space ‘angular momentum’ conservation. We find that one of these models leads to insufficient particle production and cannot explain the observed dark matter relic abundance. The second model is able to explain the origin of spin-0 dark matter via gravitational production, and we identify the relevant region of parameter space that is consistent with measurements of the dark-matter relic abundance, the dark-matter-photon isocurvature perturbations, and the spectrum of curvature perturbations that is probed by cosmological observations. Our work demonstrates the compatibility of the de Sitter swampland conjecture with completely dark matter.en_US
dc.identifier.citationKolb, Edward W., Long, Andrew J., McDonough, Evan, et al.. "Completely dark matter from rapid-turn multifield inflation." <i>Journal of High Energy Physics,</i> 2023, (2023) Springer Nature: https://doi.org/10.1007/JHEP02(2023)181.en_US
dc.identifier.digitalJHEP02-2023-181en_US
dc.identifier.doihttps://doi.org/10.1007/JHEP02(2023)181en_US
dc.identifier.urihttps://hdl.handle.net/1911/114493en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleCompletely dark matter from rapid-turn multifield inflationen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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