Results 31 to 40 of about 657 (140)
On supersymmetric AdS4 orientifold vacua
Journal of High Energy Physics, 2020 In this work we study ten-dimensional solutions to type IIA string theory of the form AdS4 × X 6 which contain orientifold planes and preserve N $$ \mathcal{N} $$ = 1 supersymmetry.
Fernando Marchesano +3 more
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Superstring Vacua of 4-dimensional PP-Waves with Enhanced Supersymmetry [PDF]
Journal of High Energy Physics, 2002 We study the superstring vacua constructed from the conformal field theories of the type H_4 x M, where H_4 denotes the super Nappi-Witten model (super WZW model on the 4-dimensional Heisenberg group H_4) and M denotes an arbitrary N=2 rational superconformal field theory with c=9.
Hikida, Yasuaki, Sugawara, Yuji
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de Sitter vacua from ten dimensions
Journal of High Energy Physics, 2021 We analyze the de Sitter construction of [1] using ten-dimensional supergravity, finding exact agreement with the four-dimensional effective theory. Starting from the fermionic couplings in the D7-brane action, we derive the ten-dimensional stress-energy
Shamit Kachru +3 more
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Stable non-supersymmetric vacua in the moduli space of non-critical superstrings [PDF]
Nuclear Physics B, 2006 We study a set of asymmetric deformations of non-critical superstring theories in various dimensions. The deformations arise as Kaehler and complex structure deformations of an orthogonal two-torus comprising of a parallel and a transverse direction in the near-horizon geometry of NS5-branes.
Harmark, Troels +2 more
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Journal of High Energy Physics, 2020 We study non-perturbative instabilities of AdS spacetime in General Relativity with a cosmological constant in arbitrary dimensions. In this simple setup we explicitly construct a class of gravitational instantons generalizing Witten’s bubble of nothing.
Giuseppe Dibitetto +2 more
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Moduli stabilization in type IIB orientifolds at h2,1 = 50
Journal of High Energy Physics, 2023 We study moduli stabilization in Calabi-Yau orientifold compactifications of type IIB string theory with O3- and O7-planes. We consider a Calabi-Yau three-fold with Hodge number h 2,1 = 50 and stabilize all axio-dilaton and complex-structure moduli by ...
Konstantinos Tsagkaris, Erik Plauschinn
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Classification of flat directions in perturbative heterotic superstring vacua with anomalous U(1) [PDF]
Nuclear Physics B, 1998 26 ...
Cleaver, Gerald +4 more
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Quaternionic manifolds for type II superstring vacua of Calabi-Yau spaces [PDF]
Nuclear Physics B, 1990 Abstract In type II theories compactified on Calabi-Yau manifolds the moduli fields are accompanied by (Ramond-Ramond) scalar superpartners. N = 2 space-time supersymmetry requires the low-energy effective mutual interaction of these excitations be described by a quaternionic σ-model in target space.
S. Ferrara, S. Sabharwal
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Scaling limits of dS vacua and the swampland
Journal of High Energy Physics, 2019 We discuss the properties of massive type IIA flux compactifications. In particular, we investigate in which case one can obtain dS vacua at large volume and small coupling.
Andreas Banlaki +3 more
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New de Sitter solutions of 10d type IIB supergravity
Journal of High Energy Physics, 2020 We find and study 17 new de Sitter solutions of ten-dimensional (10d) type IIB supergravity with intersecting D 5-branes and orientifold O 5-planes, as well as a new Minkowski one.
David Andriot +2 more
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