Preprint

PUBDB-2022-02855

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Axionic Festina Lente

Guidetti, V.DESY* ; Righi, N. (Corresponding author)DESY* ; Venken, G. ; Westphal, A.DESY*

2022

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Please use a persistent id in citations: doi:10.3204/PUBDB-2022-02855

Report No.: DESY-22-098; arXiv:2206.03494

Abstract: The swampland conjecture known as Festina Lente (FL) imposes a lower bound on the mass of all charged particles in a quasi-de Sitter space. In this paper, we propose the aFL (axionic Festina Lente) bound, an extension of FL to axion-like particles arising from type II string theory. We find that the product of the instanton action and the axion decay constant is bounded from below by the vacuum energy. This is achieved indirectly, using dimensional reduction on Calabi-Yau threefolds, and translating the FL result for dipoles into a purely geometric bound. We discuss axionic black holes evolution, and aFL constraints on Euclidean wormholes, showing that the gravitational arguments leading to the FL bound for U$(1)$ charged particles cannot be directly applied to axions. Moreover, we discuss phenomenological implications of the aFL bound, including constraints on string inflation models and the axion-photon coupling via kinetic mixing.

Keyword(s): mixing, kinetic ; wormhole, Euclidean ; axion, decay constant ; inflation, model ; instanton, action ; vacuum state, energy ; black hole, axion ; charged particle ; dimensional reduction ; gravitation ; string model ; string ; Calabi-Yau ; dipole ; axion-like particles

Note: 20 pages, 2 figures

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. STRINGFLATION - Inflation in String Theory - Connecting Quantum Gravity with Observations (647995) (647995)
3. EXC 2121 - Das Quantisierte Universum (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2022

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Guidetti, V. ; Righi, N.DESY* ; Venken, G. (Corresponding author) ; Westphal, A.DESY*
Axionic Festina Lente
Journal of high energy physics 01(1), 114 (2023) [10.1007/JHEP01(2023)114]2023     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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