Results 111 to 120 of about 808 (166)
Uplifts of maximal supergravities and transitions to non-geometric vacua
Journal of High Energy Physics, 2019 We describe a new procedure to obtain consistent backgrounds that uplift vacua and deformations of various maximal gauged supergravities by taking a known solution and performing singular limits along the moduli space of the corresponding 4-dimensional ...
Gianguido Dall’Agata +2 more
doaj +1 more source
Solvable models of quantum black holes: a review on Jackiw-Teitelboim gravity. [PDF]
Living Rev Relativ, 2023 Mertens TG, Turiaci GJ.
europepmc +1 more source
Extensions of a scale-separated AdS4 solution and their mass spectrum
Journal of High Energy PhysicsWe consider two extensions of the so-called DGKT solution, a 4d scale-separated anti-de Sitter (AdS) solution obtained as a compactification on a 6d torus orbifold. Each extension consists in a specific large n expansion beyond the DGKT solution, where n
David Andriot, George Tringas
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Weakly coupled de Sitter vacua with fluxes and the swampland
Journal of High Energy Physics, 2019 It was recently argued that the swampland distance conjecture rules out dS vacua at parametrically large field distances. We point out that this conclusion can in principle be avoided in the presence of large fluxes that are not bounded by a tadpole ...
Daniel Junghans
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A large class of new gravitational and axionic backgrounds for four-dimensional superstrings
, 1994 A large class of new 4-D superstring vacua with non-trivial/singular geometries, spacetime supersymmetry and other background fields (axion, dilaton) are found.
Kiritsis, E., Lust, D., Kounnas, C.
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Bimetric, Conformal Supergravity and its Superstring Embedding
, 2018 We discuss the connection between Weyl$^{2}$ supergravity and superstrings and further discuss holography between 4-dimensional, $ \mathcal{N} $ = 4 superconformal Weyl$^{2}$ supergravity and $ \mathcal{N} $ = 8, higher spin-four theory on AdS$_{5}$. The
Ferrara, Sergio +2 more
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Finite distance between distinct Calabi-Yau manifolds.
, 1989 Moduli spaces for a wide class of Calabi-Yau manifolds with different numerical invariants (and thus topologically distinct) can be assembled into a connected web in which all distances are finite.
Candelas, P +3 more
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Topological defects in low-energy string gravity [PDF]
, 1999 Cosmologists are interested in topological defects as a possible source for the primordial density perturbations which seeded structure formation through gravitational instability.
Dando, Owen Robert
core
, 1999 In the context of the free-fermionic formulation of the heterotic superstring, we construct a three generation N=1 supersymmetric SU(4)xSU(2)LxSU(2)R model supplemented by an SU(8) hidden gauge symmetry and five Abelian factors.
Rizos, J, Leontaris, George K
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Heterotic superstring vacua in four dimensions based on non-compact affine current algebras
Nuclear Physics B, 1990 Abstract New classes of unitary conformal and superconformal theories based on cosets of affine non-compact current algebras are suggested. Unitarity restrictions and the structure of the modules labelled by the primary states are discussed in general terms as well as in detail for SU (1,1)/ U (1), SU (N,M)/ SU (N) × SU (M) × U (1)
openaire +1 more source