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Superstring cosmology for N_4 = 1 -> 0 superstring vacua [PDF]
Fortschritte der Physik, 2010 We study the cosmology of perturbative heterotic superstring theory during the radiation-like era for semi-realistic backgrounds with initial $\N=1$ supersymmetry.
Albrecht +89 more
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Spacetime Variable Superstring Vacua [PDF]
International Journal of Modern Physics A, 1993 In a general superstring vacuum configuration, the `internal' space (sector) varies in spacetime. When this variation is non-trivial only in two space-like dimensions, the vacuum contains static cosmic strings with finite energy per unit length and which
Green, Paul S., Hubsch, Tristan
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A search for exact superstring vacua [PDF]
Il Nuovo Cimento A, 1993 We investigate $2d$ sigma-models with a $2+N$ dimensional Minkowski signature target space metric and Killing symmetry, specifically supersymmetrized, and see under which conditions they might lead to corresponding exact string vacua. It appears that the
Petermann, A., Zichichi, A.
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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 $10^{15}$ heterotic string vacua with Pati-
Rizos, J.
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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.
Rizos, J.
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Cosmological Implications of Domain Walls due to Duality Invariant Moduli Sector of Superstring Vacua [PDF]
Physics Letters B, 1992 We study cosmological implications of the duality ($PSL(2,{\bf Z})$) invariant potential for the compactification radius $T$, arising in a class of superstring vacua.
Albrecht +50 more
core +4 more sources
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
exaly +3 more sources
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, Fabian Ruehle
exaly +3 more sources
Charge completeness and the massless charge lattice in F-theory models of supergravity
Journal of High Energy Physics, 2021 We prove that, for every 6D supergravity theory that has an F-theory description, the property of charge completeness for the connected component of the gauge group (meaning that all charges in the corresponding charge lattice are realized by massive or ...
David R. Morrison, Washington Taylor
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Analytics of type IIB flux vacua and their mass spectra
Journal of High Energy Physics, 2023 We analyze the tree-level potential of type IIB flux compactifications in warped Calabi-Yau orientifolds, in regions of weak coupling and moderately large complex structure.
Thibaut Coudarchet +3 more
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