Lifshitz backgrounds from 10d supergravity
AbstractWe investigate whether 4-dimensional static and cosmological Lifshitz solutions can be found from deforming the existing (A)dS4 compactifications in IIA and IIA⋆ supergravity. Using a well...
View ArticleSmeared versus localised sources in flux compactifications
AbstractWe investigate whether vacuum solutions in flux compactifications that are obtained with smeared sources (orientifolds or D-branes) still survive when the sources are localised. This seems to...
View ArticleThe problematic backreaction of SUSY-breaking branes
AbstractIn this paper we investigate the localisation of SUSY-breaking branes which, in the smeared approximation, support specific non-BPS vacua. We show, for a wide class of boundary conditions, that...
View Article(Anti-) brane backreaction beyond perturbation theory
AbstractWe improve on the understanding of the backreaction of anti-D6-branes in a flux background that is mutually BPS with D6-branes. This setup is analogous to the study of the backreaction of...
View ArticleResolving anti-brane singularities through time-dependence
AbstractIn this note we discuss a possible resolution of the flux singularities associated with the insertion of branes in backgrounds supported by fluxes that carry charges opposite to the branes. We...
View ArticleFully stable dS vacua from generalised fluxes
AbstractWe investigate the possible existence of (meta-)stable de Sitter vacua within \( \mathcal{N} \) = 1 compactificationswithgeneralisedfluxes. Withtheaidofanalgorithminspiredby the method of...
View ArticleBPS domain walls from backreacted orientifolds
AbstractCompactifications with D-brane and orientifold sources lead to standard gauged supergravity theories if the sources are smeared over the internal directions. It is therefore of interest to find...
View ArticleLoop corrections to the antibrane potential
AbstractAntibranes provide some of the most generic ways to uplift Anti-de Sitter flux compactifications to de Sitter, and there is a growing body of evidence that antibranes placed in long warped...
View ArticleThere and back again: a T-brane’s tale
AbstractT-branes are supersymmetric configurations described by multiple Dp-branes with worldvolume flux and non-commuting vacuum expectation values for two of the worldvolume scalars. When these...
View ArticleRefining the boundaries of the classical de Sitter landscape
AbstractWe derive highly constraining no-go theorems for classical de Sitter backgrounds of string theory, with parallel sources; this should impact the embedding of cosmological models. We study...
View ArticleT-branes and matrix models
AbstractWe find that the equations describing T-branes with constant worldvolume fields are identical to the equations found by Banks, Seiberg and Shenker twenty years ago to describe longitudinal...
View ArticleErratum to: Refining the boundaries of the classical de Sitter landscape
AbstractIn the trace of the Einstein equation along internal parallel at directions, namely equations (4.14) and (4.15), a few terms have been missed.
View ArticleConstructing stable de Sitter in M-theory from higher curvature corrections
AbstractWe consider dimensional reductions of M-theory on 𝕋7/\( {\mathrm{\mathbb{Z}}}_2^3 \) with the inclusion of arbitrary metric flux and spacetime filling KK monopoles. With these ingredients at...
View ArticleThe two faces of T-branes
AbstractWe establish a brane-brane duality connecting T-branes to collections of ordinary D-branes. T-branes are intrinsically non-Abelian brane configurations with worldvolume flux, whereas their...
View ArticleThe tadpole problem
AbstractWe examine the mechanism of moduli stabilization by fluxes in the limit of a large number of moduli. We conjecture that one cannot stabilize all complex-structure moduli in F-theory at a...
View ArticleAlgorithmically Solving the Tadpole Problem
AbstractThe extensive computer-aided search applied in Bena et al. (The tadpole problem, 2020) to find the minimal charge sourced by the fluxes that stabilize all the (flux-stabilizable) moduli of a...
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