132 citations · 592 across the 21 of their papers we have counts for
25 papers · 1 filter
Effective potentials, warping, and implications for F-term uplifting
Arthur Hebecker, Severin Lüst, Andreas Schachner +1
We analyse warping corrections to the scalar potential in flux compactifications of Type IIB string theory, focusing on their effect on -term de Sitter uplifting in Calabi-Yau o…
Species Quantum Mechanics
Luis A. Anchordoqui, Dieter Lust, Severin Lüst
In this note we introduce some concepts of Species Quantum Mechanics. Specifically, we consider quantum operators that correspond to the species number and the tower mass sca…
KKLT Ex Nihilo
Iosif Bena, Yixuan Li, Severin Lüst
Flux compactifications that give three- or four-dimensional Anti de Sitter vacua with a parametrically small negative cosmological constant are claimed to be ubiquitous in String T…
An index for flux vacua
Severin Lüst
We propose to use the winding number of the gradient of a scalar potential as a simple topological index that relates critical points in the interior of the scalar field space to t…
On the cosmological constant, the KK mass scale, and the cut-off dependence in the dark dimension scenario
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lust +1
In this short note we comment on the relation between the cosmological and the Kaluza-Klein mass scale in the dark dimension scenario, also in view of some recent claims that would…
Tadpoles and Gauge Symmetries
Andreas P. Braun, Bernardo Fraiman, Mariana Graña +2
The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes that have low tadpole charge can be realised only at special points in moduli space, leading g…
The Tadpole Conjecture in the Interior of Moduli Space
Severin Lüst, Max Wiesner
We revisit moduli stabilization on Calabi-Yau manifolds with a discrete symmetry. Invariant fluxes allow for a truncation to a symmetric locus in complex structure moduli space and…
Effective Theory of Warped Compactifications and the Implications for KKLT
Severin Lüst, Lisa Randall
We argue that effective actions for warped compactifications can be subtle, with large deviations in the effective potential from naive expectations owing to constraint equations f…
Holography and the KKLT Scenario
Severin Lüst, Cumrun Vafa, Max Wiesner +1
The KKLT scenario, one of the few ideas to realize dS vacua in string theory, consists of two steps: the first involves the construction of a supersymmetric AdS vacuum with a small…
Large complex structure flux vacua of IIB and the Tadpole Conjecture
Severin Lüst
In this note I demonstrate that certain findings on IIB flux compactifications in the large complex structure limit, when combined with recent statistical bounds on the large $h^{2…
Holographic BCFTs and Communicating Black Holes
Hao Geng, Severin Lüst, Rashmish K. Mishra +1
We study the AdS/BCFT duality between two-dimensional conformal field theories with two boundaries and three-dimensional anti-de Sitter space with two Karch-Randall branes. We comp…
Algorithmically solving the Tadpole Problem
Iosif Bena, Johan Blåbäck, Mariana Graña +1
The extensive computer-aided search applied in [arXiv:2010.10519] to find the minimal charge sourced by the fluxes that stabilize all the (flux-stabilizable) moduli of a smooth K3x…
The Swampland at Large Number of Space-Time Dimensions
Quentin Bonnefoy, Luca Ciambelli, Dieter Lust +1
We discuss some aspects of swampland constraints - especially the swampland distance conjecture - in a large number of space-time dimensions . We analyze Kaluza-Klein (KK) state…
The Tadpole Problem
Iosif Bena, Johan Blåbäck, Mariana Graña +1
We 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-theor…
Weak gravity (and other conjectures) with broken supersymmetry
Quentin Bonnefoy, Emilian Dudas, Severin Lüst
We study the weak gravity conjecture in non-supersymmetric string theory setups. Precisely, those are type I string theory with supersymmetry broken à la Scherk-Schwarz and open st…
Infinite Black Hole Entropies at Infinite Distances and Tower of States
Quentin Bonnefoy, Luca Ciambelli, Dieter Lust +1
The aim of this paper is to elucidate a close connection between the black hole area law and the infinite distance conjecture in the context of the swampland. We consider families…
Throat destabilization (for profit and for fun)
Iosif Bena, Alex Buchel, Severin Lüst
Two recent results indicate that the addition of supersymmetry-breaking ingredients can destabilize the Klebanov-Strassler warped deformed conifold throat. The first comes from an…
Microstate geometries at a generic point in moduli space
Guillaume Bossard, Severin Lüst
We systematically study all supersymmetric solutions of six-dimensional (2,0) supergravity with a null isometry. In particular, every such solution with at least four real supersym…
On the weak gravity conjecture in string theory with broken supersymmetry
Quentin Bonnefoy, Emilian Dudas, Severin Lüst
We use type I string models with supersymmetry broken by compactification (à la Scherk-Schwarz) in order to test the weak gravity conjecture in the presence of runaway potentials i…
Uplifting Runaways
Iosif Bena, Emilian Dudas, Mariana Graña +1
We find a mechanism by which antibranes placed in a warped deformed conifold throat can destroy the stabilization of the size of the sphere at the tip, collapsing it to zero size.…
Maximally Supersymmetric AdS Solutions in Gauged Supergravity
Severin Lust
In this thesis we study maximally supersymmetric solutions of gauged supergravity theories, with special focus on anti-de Sitter solutions. The latter are relevant in the context o…
Maximally Supersymmetric AdS Solutions and their Moduli Spaces
Severin Lust, Philipp Ruter, Jan Louis
We study maximally supersymmetric AdS solutions of gauged supergravities in dimensions . We show that such solutions can only exist if the gauge group after spontaneo…
Classification of maximally supersymmetric backgrounds in supergravity theories
Jan Louis, Severin Lust
We study maximally supersymmetric solutions of all gauged or deformed supergravity theories in space-time dimensions. For vanishing background fluxes the space-time backg…
Supersymmetric AdS_7 backgrounds in half-maximal supergravity and marginal operators of (1,0) SCFTs
Jan Louis, Severin Lust
We determine the supersymmetric AdS_7 backgrounds of seven-dimensional half-maximal gauged supergravities and show that they do not admit any deformations that preserve all 16 supe…