Journal Article

PUBDB-2023-00505

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

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

2023
SISSA [Trieste]

This record in other databases:        

Please use a persistent id in citations: doi:10.1007/JHEP01(2023)114  doi:10.3204/PUBDB-2023-00505

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 ; Cosmology of Theories BSM ; String and Brane Phenomenology ; D-Branes ; Black Holes in String Theory

Note: v3: minor revisions, version published in JHEP, 21 pages, 2 figures

---

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 2023

---

Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---

---

Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Guidetti, V.DESY* ; Righi, N. (Corresponding author)DESY* ; Venken, G. ; Westphal, A.DESY*
Axionic Festina Lente
[10.3204/PUBDB-2022-02855]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

---