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pro vyhledávání: '"Lüst, Severin"'
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 Theory. However, the 1+1 and 2+1 dimensional CFT duals to such vacua sh
Externí odkaz:
http://arxiv.org/abs/2410.22400
Autor:
Lüst, Severin
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 the behavior of the potential at the (asymptotic) boundary of the field
Externí odkaz:
http://arxiv.org/abs/2405.04584
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 raise some doubts about the validity of this scenario. Here we argue
Externí odkaz:
http://arxiv.org/abs/2309.09330
Autor:
Braun, Andreas P., Fraiman, Bernardo, Graña, Mariana, Lüst, Severin, de Freitas, Héctor Parra
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 generically to (large) gauge symmetries. Here we provide an exhaustive
Externí odkaz:
http://arxiv.org/abs/2304.06751
Autor:
Lüst, Severin, Wiesner, Max
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 hence drastically reduce the moduli stabilization problem in its dime
Externí odkaz:
http://arxiv.org/abs/2211.05128
Autor:
Lüst, Severin, Randall, Lisa
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 from the higher-dimensional metric. We demonstrate this deviation in a
Externí odkaz:
http://arxiv.org/abs/2206.04708
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 negative cosmological constant, and the second involves breaking supe
Externí odkaz:
http://arxiv.org/abs/2204.07171
Autor:
Lüst, Severin
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 $h^{2,1}$ limit, are compatible with the Tadpole Conjecture, contrary to pr
Externí odkaz:
http://arxiv.org/abs/2109.05033
Publikováno v:
JHEP08(2021)003
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 compute the entanglement entropy of a bipartition of the BCFT, on both the
Externí odkaz:
http://arxiv.org/abs/2104.07039
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 K3xK3 compactification uses differential evolutionary algorithms suppleme
Externí odkaz:
http://arxiv.org/abs/2103.03250