The F-term problem and other challenges of stringy quintessence
We attempt a systematic analysis of string-theoretic quintessence models as an alternative to metastable de Sitter vacua. It appears that, within the boundaries of what is known, large-volume type-IIB flux compactifications are preferred. Here the quintessence scalar is the ratio of certain 4-cycle...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) Kapitel/Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
24 Feb 2020
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| Ausgabe: | Version v2 |
| In: |
Arxiv
Year: 2020, Pages: 1-24 |
| DOI: | 10.1007/JHEP11(2019)134 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP11(2019)134 Verlag, lizenzpflichtig, Volltext: http://arxiv.org/abs/1909.08625 
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| Verfasserangaben: | Arthur Hebecker, Torben Skrzypek, Manuel Wittner |
| Zusammenfassung: | We attempt a systematic analysis of string-theoretic quintessence models as an alternative to metastable de Sitter vacua. It appears that, within the boundaries of what is known, large-volume type-IIB flux compactifications are preferred. Here the quintessence scalar is the ratio of certain 4-cycle volumes. It has already been noticed that the volume modulus, which must be stabilized, tends to remain too light. One may call this the "light volume problem". In addition, we identify an "$F$-term problem": The positive energy density of standard-model SUSY breaking is higher than the depth of all known negative contributions. We discuss what it would take to resolve these issues and comment on partially related challenges for axionic quintessence. In particular, large cancellations between positive and negative potential terms appear unavoidable in general. As a further challenge, one should then explain why a small de-tuning cannot be used to uplift into a deep slow-roll regime, violating de Sitter swampland conjectures. |
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| Beschreibung: | Version 1 vom 18 September 2019, Version 2 vom 24 Februar 2020 Gesehen am 18.10.2022 |
| Beschreibung: | Online Resource |
| DOI: | 10.1007/JHEP11(2019)134 |