Stringy Bubbles Solve de Sitter Troubles
| dc.contributor.author | Berglund, Per | en |
| dc.contributor.author | Hübsch, Tristan | en |
| dc.contributor.author | Minic, Djordje | en |
| dc.date.accessioned | 2021-10-13T12:24:38Z | en |
| dc.date.available | 2021-10-13T12:24:38Z | en |
| dc.date.issued | 2021-09-28 | en |
| dc.date.updated | 2021-10-12T14:17:52Z | en |
| dc.description.abstract | Finding four-dimensional de Sitter spacetime solutions in string theory has been a vexing quest ever since the discovery of the accelerating expansion of the universe. Building on a recent analysis of bubble-nucleation in the decay of (false-vacuum) AdS backgrounds where the interfacing bubbles themselves exhibit a de Sitter geometry we show that this resonates strongly with a stringy cosmic brane construction that naturally provides for an exponential mass-hierarchy and the localization of both gravity and matter, in addition to an exponentially suppressed positive cosmological constant. Finally, we argue that these scenarios can be realized in terms of a generalization of a small resolution of a conifold singularity in the context of a (Lorentzian) Calabi–Yau 5-fold, where the isolated (Lorentzian) two complex dimensional Fano variety is a four-dimensional de Sitter spacetime. | en |
| dc.description.version | Published version | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Berglund, P.; Hübsch, T.; Minic, D. Stringy Bubbles Solve de Sitter Troubles. Universe 2021, 7, 363. | en |
| dc.identifier.doi | https://doi.org/10.3390/universe7100363 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/105264 | en |
| dc.language.iso | en | en |
| dc.publisher | MDPI | en |
| dc.rights | Creative Commons Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
| dc.subject | string theory | en |
| dc.subject | de Sitter | en |
| dc.subject | Calabi–Yau | en |
| dc.subject | desingularization | en |
| dc.title | Stringy Bubbles Solve de Sitter Troubles | en |
| dc.title.serial | Universe | en |
| dc.type | Article - Refereed | en |
| dc.type.dcmitype | Text | en |