Results 11 to 20 of about 27,946 (159)
The “Landscape” of Pati–Salam Heterotic Superstring Vacua [PDF]
Fortschritte Der Physik, 2010 The main aspects of a recently developed method for classification of heterotic superstring vacua in the Free Fermionic Formulation are presented. Using these techniques we classify a big number of approximately 1015 heterotic string vacua with Pati ...
J Rizos
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Top-quark mass coupling and classification of weakly coupled heterotic superstring vacua [PDF]
The European Physical Journal C, 2014 The quest for the Standard Model among the huge number of string vacua is usually based on a set of phenomenological criteria related to the massless spectrum of string models.
J. Rizos
semanticscholar +4 more sources
New N=1 Supersymmetric 3-Dimensional Superstring Vacua From U-Manifolds [PDF]
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1998 Making use of non-perturbative U-duality symmetries of type II strings we construct new `superstring' vacua in three dimensions with N =1 supersymmetry.
Gottfried Curio, Dieter Lust
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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 H4 ? , where H4 denotes the super Nappi-Witten model (super WZW model on the 4-dimensional Heisenberg group H4) and denotes an arbitrary = 2 rational superconformal ...
Yasuaki Hikida, Yuji Sugawara
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Holomorphic Structure of Superstring Vacua
Classical and Quantum Gravity, 1987 K Pilch
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De Sitter vacua — when are ‘subleading corrections’ really subleading?
Journal of High Energy Physics, 2023 We consider various string-loop, warping and curvature corrections that are expected to appear in type IIB moduli stabilisation scenarios. It has recently been argued, in the context of strongly-warped LVS de Sitter vacua, that it is impossible to ...
Bruno Valeixo Bento +3 more
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On fluxes in the 19 Landau-Ginzburg model
Journal of High Energy Physics, 2023 In this paper we present a large class of flux backgrounds and solve the shortest vector problem in type IIB string theory on an orientifold of the 19 Landau-Ginzburg model.
Katrin Becker +2 more
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Moduli stabilization in asymptotic flux compactifications
Journal of High Energy Physics, 2022 We present a novel strategy to systematically study complex-structure moduli stabilization in Type IIB and F-theory flux compactifications. In particular, we determine vacua in any asymptotic regime of the complex-structure moduli space by exploiting ...
Thomas W. Grimm +2 more
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On (scalar QED) gravitational positivity bounds
Journal of High Energy Physics, 2023 We study positivity bounds in the presence of gravity. We first review the gravitational positivity bound at the tree-level, where it is known that a certain amount of negativity is allowed for the coefficients of higher-derivative operators. The size of
Yuta Hamada +3 more
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Superstring cosmology for N4 = 1 → 0 superstring vacua [PDF]
, 2010 We study the cosmology of perturbative heterotic superstring theory during the radiation‐like era for semi‐realistic backgrounds with initial 𝒩 = 1 supersymmetry.
J. Estes, C. Kounnas, H. Partouche
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