Dark energy and the refined de sitter conjecture
Abstract We revisit the phenomenology of quintessence models in light of the recently refined version of the de Sitter Swampland conjecture, which includes the possibility of unstable de Sitter critical points. We show that models of quintessence can evade previously derived lower bounds on (1 + w),...
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doaj-00d1f83ca5bb4a049dda5ee387a9b1552020-11-25T03:17:18ZengSpringerOpenJournal of High Energy Physics1029-84792019-06-012019611110.1007/JHEP06(2019)103Dark energy and the refined de sitter conjecturePrateek Agrawal0Georges Obied1Jefferson Physical Laboratory, Harvard UniversityJefferson Physical Laboratory, Harvard UniversityAbstract We revisit the phenomenology of quintessence models in light of the recently refined version of the de Sitter Swampland conjecture, which includes the possibility of unstable de Sitter critical points. We show that models of quintessence can evade previously derived lower bounds on (1 + w), albeit with very finely-tuned initial conditions. In the absence of such tuning or other rolling quintessence fields, a field with mass close to Hubble is required, which has a generic prediction for (1+ w). Slow-roll single field inflation models remain in tension. Other phenomenological constraints arising from the coupling of the quintessence field with the Higgs or the QCD axion are significantly relaxed.http://link.springer.com/article/10.1007/JHEP06(2019)103Cosmology of Theories beyond the SMEffective Field Theories |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Prateek Agrawal Georges Obied |
spellingShingle |
Prateek Agrawal Georges Obied Dark energy and the refined de sitter conjecture Journal of High Energy Physics Cosmology of Theories beyond the SM Effective Field Theories |
author_facet |
Prateek Agrawal Georges Obied |
author_sort |
Prateek Agrawal |
title |
Dark energy and the refined de sitter conjecture |
title_short |
Dark energy and the refined de sitter conjecture |
title_full |
Dark energy and the refined de sitter conjecture |
title_fullStr |
Dark energy and the refined de sitter conjecture |
title_full_unstemmed |
Dark energy and the refined de sitter conjecture |
title_sort |
dark energy and the refined de sitter conjecture |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2019-06-01 |
description |
Abstract We revisit the phenomenology of quintessence models in light of the recently refined version of the de Sitter Swampland conjecture, which includes the possibility of unstable de Sitter critical points. We show that models of quintessence can evade previously derived lower bounds on (1 + w), albeit with very finely-tuned initial conditions. In the absence of such tuning or other rolling quintessence fields, a field with mass close to Hubble is required, which has a generic prediction for (1+ w). Slow-roll single field inflation models remain in tension. Other phenomenological constraints arising from the coupling of the quintessence field with the Higgs or the QCD axion are significantly relaxed. |
topic |
Cosmology of Theories beyond the SM Effective Field Theories |
url |
http://link.springer.com/article/10.1007/JHEP06(2019)103 |
work_keys_str_mv |
AT prateekagrawal darkenergyandtherefineddesitterconjecture AT georgesobied darkenergyandtherefineddesitterconjecture |
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1724632105410887680 |