A swamp of non-SUSY vacua
U. H. Danielsson, G. Dibitetto, S. C. Vargas

TL;DR
This paper investigates the stability of known non-supersymmetric AdS solutions from massive type IIA supergravity, revealing that open-string modes often violate stability bounds, which impacts the viability of such string theory models.
Contribution
It provides a detailed stability analysis of non-SUSY AdS vacua, including open-string effects, and discusses implications for the Weak Gravity Conjecture and string theory constructions.
Findings
Open strings often develop modes below the BF bound.
Non-SUSY AdS solutions are generally unstable due to open-string excitations.
Analysis informs the validity of non-supersymmetric string models.
Abstract
We consider known examples of non-supersymmetric AdS and AdS solutions arising from compactifications of massive type IIA supergravity and study their stability, taking into account the coupling between closed- and open-string sector excitations. Generically, open strings are found to develop modes with masses below the Breitenlohner-Freedman (BF) bound. We comment on the relation with the Weak Gravity Conjecture, and how this analysis may play an important role in examining the validity of non-supersymmetric constructions in string theory.
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