The F-term problem and other challenges of stringy quintessence

• Verfasst von: Hebecker, Arthur [VerfasserIn]
• Verfasst von: Skrzypek, Torben [VerfasserIn]
• Verfasst von: Wittner, Manuel [VerfasserIn]
• Titel: The F-term problem and other challenges of stringy quintessence
• Verf.angabe: Arthur Hebecker, Torben Skrzypek and Manuel Wittner
• E-Jahr: 2019
• Jahr: 25 November 2019
• Umfang: 22 S.
• Fussnoten: Gesehen am 06.02.2020
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2019
• Band/Heft Quelle: (2019) Artikelnummer 134, 22 Seiten
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP11(2019)134
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Cosmology of Theories beyond the SM
• Sach-SW: Flux compactifications
• Sach-SW: Supersymmetry Breaking
• K10plus-PPN: 1689521910

Abstract

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.