An alternative to anti-branes and O-planes?

Abstract

In this paper we consider type IIA compactifications in the isotropic Z2 x Z2 orbifold with a flux-induced perturbative superpotential combined with non-perturbative effects. Without requiring the presence of O-planes, and simply having D6-branes as local sources, we demonstrate the existence of de Sitter (dS) critical points, where the non-perturbative contributions to the cosmological constant have negligible size. We note, however, that these solutions generically have tachyons. By means of a more systematic search, we are able to find two examples of stable dS vacua with no need for anti-branes or O-planes, which, however, exhibit important non-perturbative corrections. The examples that we present turn out to remain stable even after opening up the fourteen non-isotropic moduli.

12 pages, 4 tables; v2: typos corrected, published version

References in corpus (4)

• Inflationary Constraints on Type IIA String Theory
• deSitter vacua from uplifting D-terms in effective supergravities from realistic strings
• Charting the landscape of N=4 flux compactifications
• D-brane instantons and the effective field theory of flux compactifications

Cited by in corpus (10)

• Analytic Classes of Metastable de Sitter Vacua
• Weakly Coupled de Sitter Vacua with Fluxes and the Swampland
• N-flation with Hierarchically Light Axions in String Compactifications
• Tachyons in Classical de Sitter Vacua
• De Sitter Vacua from Non-perturbative Flux Compactifications
• Decoupling and de Sitter Vacua in Approximate No-Scale Supergravities
• Uplifting Anti-D6-brane
• Warped Ricci-flat reductions
• Constructing stable de Sitter in M-theory from higher curvature corrections
• Single-step de Sitter vacua from non-perturbative effects with matter