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The “landscape” of Pati–Salam heterotic superstring vacua [PDF]

open access: yesFortschritte 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-
J Rizos
exaly   +6 more sources

Top-quark mass coupling and classification of weakly coupled heterotic superstring vacua [PDF]

open access: yesEuropean 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
exaly   +4 more sources

Symmetries of cosmological superstring vacua [PDF]

open access: yesPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1991
Abstract The concept of discrete scale-factor-duality transformations is extended to a full, continuous O(d, d) group. The action of the group transforms “cosmological” solutions of the low-energy, string-modified Einstein equations (including non-trivial dilaton and antisymmetric tensor fields) into other solutions, thus representing the natural ...
Veneziano, Gabriele, Meissner, K A
exaly   +3 more sources

Eluding SUSY at every genus on stable closed string vacua [PDF]

open access: yesJournal of High Energy Physics, 2011
In closed string vacua, ergodicity of unipotent ows provide a key for relat-ing vacuum stability to the UV behavior of spectra and interactions. Infrared finiteness at all genera in perturbation theory can be rephrased in terms of cancelations involving ...
Sérgio L Cacciatori   +2 more
exaly   +2 more sources

Type IIB flux compactifications with h 1,1 = 0

open access: yesJournal of High Energy Physics, 2022
We revisit flux compactifications of type IIB string theory on ‘spaces’ dual to rigid Calabi-Yau manifolds. This rather unexplored part of the string landscapes harbors many interesting four-dimensional solutions, namely supersymmetric N $$ \mathcal{N} $$
Jacob Bardzell   +4 more
doaj   +1 more source

Charge completeness and the massless charge lattice in F-theory models of supergravity

open access: yesJournal 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
doaj   +1 more source

Analytics of type IIB flux vacua and their mass spectra

open access: yesJournal 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
doaj   +1 more source

Fake supersymmetry with tadpole potentials

open access: yesJournal of High Energy Physics, 2023
We study tadpole potentials of non-supersymmetric strings, resorting to a first-order formalism known in the literature as fake supersymmetry. We present a detailed analysis for vacua with only gravity and the dilaton, displaying the obstructions that ...
Salvatore Raucci
doaj   +1 more source

The convex hull swampland distance conjecture and bounds on non-geodesics

open access: yesJournal of High Energy Physics, 2021
The Swampland Distance Conjecture (SDC) restricts the geodesic distances that scalars can traverse in effective field theories as they approach points at infinite distance in moduli space.
José Calderón-Infante   +2 more
doaj   +1 more source

Quantum log-corrections to swampland conjectures

open access: yesJournal of High Energy Physics, 2020
Taking the anti-de Sitter minimum of KKLT and the large volume scenario at face value, we argue for the existence of logarithmic quantum corrections to AdS swampland conjectures.
Ralph Blumenhagen   +2 more
doaj   +1 more source

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