Results 61 to 70 of about 9,349 (162)
The tadpole conjecture at large complex-structure
Journal of High Energy Physics, 2022 The tadpole conjecture by Bena, Blåbäck, Graña and Lüst effectively states that for string-theory compactifications with a large number of complex-structure moduli, not all of these moduli can be stabilized by fluxes.
Erik Plauschinn
doaj +1 more source
On the Picture Dependence of Ramond-Ramond Cohomology [PDF]
, 1997 Closed string physical states are BRST cohomology classes computed on the space of states annihilated by $b_0^-$. Since $b_0^-$ does not commute with the operations of picture changing, BRST cohomologies at different pictures need not agree.
Aref'eva +42 more
core +2 more sources
On R^4 terms and MHV amplitudes in N = 5,6 supergravity vacua of Type II superstrings [PDF]
Advances in High Energy Physics, 2010 19 ...
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Branes with brains: exploring string vacua with deep reinforcement learning
Journal of High Energy Physics, 2019 We propose deep reinforcement learning as a model-free method for exploring the landscape of string vacua. As a concrete application, we utilize an artificial intelligence agent known as an asynchronous advantage actor-critic to explore type IIA ...
James Halverson +2 more
doaj +1 more source
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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Geometry and Quantum Symmetries of Superstring Vacua [PDF]
, 1992 We report on some recent progress which has been made in the understanding of general features of superstring compactifications. The following aspects are discussed: special geometry of the moduli space of (2,2) vacua, target-space duality symmetries, differential equations for the periods of holomorphic three-forms, and higher loop (genus) string ...
openaire +1 more source
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
doaj +1 more source
Fortschritte der Physik, Volume 74, Issue 3, March 2026.ABSTRACT We propose a manifestly duality‐invariant, Lorentz‐invariant, and local action to describe quantum electrodynamics in the presence of magnetic monopoles that derives from Sen's formalism. By employing field strengths as the dynamical variables, rather than potentials, this formalism resolves longstanding ambiguities in prior frameworks.
Aviral Aggarwal +2 more
wiley +1 more source
Symmetries on the Space of (2, 2) Superstring Vacua and Automorphism Groups of Calabi-Yau Manifolds [PDF]
Progress of Theoretical Physics Supplement, 1990 Symmetry groups on the space of (2,2) string vacua for c = 3,6,9 are discussed in the context of orbifoldized Landau-Ginzburg theories. A general method for finding the maximal symmetry groups on the moduli space of untwisted marginal operators is presented, by studying symmetries on the resolution of isolated singularities of superpotentials ...
Giveon, A., Smit, D.-J.
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Yukawa Couplings in Heterotic Standard Models [PDF]
, 2006 In this paper, we present a formalism for computing the Yukawa couplings in heterotic standard models. This is accomplished by calculating the relevant triple products of cohomology groups, leading to terms proportional to Q*H*u, Q*Hbar*d, L*H*nu and L ...
+33 more
core +3 more sources