Membranes in AdS4 orientifold vacua and their Weak Gravity Conjecture

A bstract We study type IIA orientifold compactifications with fluxes that give rise to perturbatively stable, non-supersymmetric AdS 4 vacua with D6-brane gauge sectors. Non-perturbative instabilities can be mediated by D8-branes wrapped on the six internal dimensions X 6 , if they reduce to 4d mem...

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Bibliographic Details
Published in:The journal of high energy physics 2022-09, Vol.2022 (9), p.34-46, Article 34
Main Authors: Casas, Gonzalo F., Marchesano, Fernando, Prieto, David
Format: Article
Language:English
Subjects:
Approximation
Branes
Classical and Quantum Gravitation
D-Branes
Elementary Particles
Flux Compactifications
High energy physics
Internal dimensions
Membranes
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Superstring Vacua
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Summary:A bstract We study type IIA orientifold compactifications with fluxes that give rise to perturbatively stable, non-supersymmetric AdS 4 vacua with D6-brane gauge sectors. Non-perturbative instabilities can be mediated by D8-branes wrapped on the six internal dimensions X 6 , if they reduce to 4d membranes with a charge Q larger than its tension T . The mismatch Q ≠ T arises due to i) curvature corrections and ii) the BIon backreaction of D6-branes wrapping 3-cycles of X 6 . We give a simple expression for the second effect in toroidal orientifolds, and find that only pairs of 3-cycles at SU(2) angles contribute to it. They either contribute towards Q > T or Q < T depending on the 3-cycles separation, allowing to engineer 4d N = 0 vacua in tension with the Weak Gravity Conjecture for membranes.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP09(2022)034