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The cosmological constant and the weak gravity conjecture

Authors :
Yang Liu
Antonio Padilla
Francisco G. Pedro
Source :
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-22 (2024)
Publication Year :
2024
Publisher :
SpringerOpen, 2024.

Abstract

Abstract We examine the descent via membrane nucleation through a landscape of vacua where the cosmological constant is given by a combination of four-form fluxes. It has been shown that this descent can be slowed exponentially for very low curvature vacua close to Minkowski space in a wide class of models satisfying certain parametric conditions, providing a possible solution to the cosmological constant problem. We explore in detail whether or not those parametric conditions are compatible with the membrane weak gravity conjecture. Whilst it is true that there is often tension, we show that this is not always the case and present an explicit model where Minkowski space is absolutely stable and the weak gravity conjecture is satisfied. This corresponds to an extension of the Bousso-Polchinski model into a generalised DBI action for four-forms. We also clarify how the landscape should be populated in a consistent model.

Details

Language :
English
ISSN :
10298479
Volume :
2024
Issue :
8
Database :
Directory of Open Access Journals
Journal :
Journal of High Energy Physics
Publication Type :
Academic Journal
Accession number :
edsdoj.81b6963e94cc469d8cbe2879321fb664
Document Type :
article
Full Text :
https://doi.org/10.1007/JHEP08(2024)048