Loop blow-up inflation

• Verfasst von: Bansal, Sukṛti [VerfasserIn]
• Verfasst von: Brunelli, Luca [VerfasserIn]
• Verfasst von: Cicoli, Michele [VerfasserIn]
• Verfasst von: Hebecker, Arthur [VerfasserIn]
• Verfasst von: Küspert, Ruben [VerfasserIn]
• Titel: Loop blow-up inflation
• Verf.angabe: Sukṛti Bansal, Luca Brunelli, Michele Cicoli, Arthur Hebecker and Ruben Kuespert
• E-Jahr: 2024
• Jahr: July 31, 2024
• Umfang: 40 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 14.07.2025
• Titel Quelle: Enthalten in: Journal of high energy physics
• Ort Quelle: Berlin : Springer, 1997
• Jahr Quelle: 2024
• Band/Heft Quelle: (2024), 7, Artikel-ID 289, Seite 1-40
• ISSN Quelle: 1029-8479
• DOI: doi:10.1007/JHEP07(2024)289
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Computational Cosmology
• Sach-SW: Cosmological models
• Sach-SW: Cosmology
• Sach-SW: Cosmology of Theories BSM
• Sach-SW: Elongation
• Sach-SW: Emergence
• Sach-SW: String and Brane Phenomenology
• Sach-SW: String Theory
• Sach-SW: Supercontinuum Generation
• Sach-SW: Superstring Vacua
• K10plus-PPN: 1930413378

Abstract

We present a new model of string inflation driven by a blow-up Kähler modulus of type IIb compactifications with a potential generated by string loops. Slow-roll is naturally realized thanks to the fact that the blow-up mode is a leading-order flat direction lifted by string loops which are unavoidable and generate a plateau at large field values. We check that throughout the whole inflationary dynamics the effective field theory is under control. We perform a phenomenological analysis determining the exact number of efoldings by studying the post-inflationary evolution. We determine the values of the microscopic parameters which lead to agreement with CMB data, together with the prediction of a tensor-to-scalar ratio of order r ∼ 10−5.