Results 1 to 10 of about 100,808 (146)

Thraxions: towards full string models [PDF]

open access: yesJournal of High Energy Physics, 2022
We elucidate various aspects of the physics of thraxions, ultra-light axions arising at Klebanov-Strassler multi-throats in the compactification space of IIB superstring theory.
Federico Carta   +3 more
doaj   +7 more sources

Statistical Relational Learning With Unconventional String Models [PDF]

open access: yesFrontiers in Robotics and AI, 2018
This paper shows how methods from statistical relational learning can be used to address problems in grammatical inference using model-theoretic representations of strings.
Mai H. Vu   +5 more
doaj   +2 more sources

Counting string theory standard models

open access: yesPhysics Letters B, 2019
We derive an approximate analytic relation between the number of consistent heterotic Calabi-Yau compactifications of string theory with the exact charged matter content of the standard model of particle physics and the topological data of the internal ...
Andrei Constantin   +2 more
doaj   +5 more sources

String breaking in a cold wind as seen by string models

open access: yesNuclear Physics B, 2022
Using the gauge/string duality, we model a heavy quark-antiquark pair in a color singlet state moving through a cold medium and explore the consequences of temperature and velocity on string breaking. In doing so, we restrict to the case of two dynamical
Oleg Andreev
doaj   +1 more source

On “Lump mass torsional vibration model” and helical deformation of drill string

open access: yesPetroleum, 2021
This paper analyses the physical models in “Kapitaniak M, Hamaneh VV, Chávez JP, Nandakumar K, Wiercigroch M. Unveiling complexity of drill–string vibrations: experiments and modelling. International Journal of Mechanical Sciences 2015; 101–102: 324–327”.
Zifeng Li
doaj   +1 more source

Stringballs and Planckballs for dark matter

open access: yesJournal of High Energy Physics, 2022
As a follow up of the seminal work by Guiot, Borquez, Deur, and Werner on “Graviballs and Dark Matter”, we explicitly show that in string theory, local and nonlocal higher derivative theories, as well as general asymptotically-free or finite theories ...
Zhongyou Mo   +3 more
doaj   +1 more source

Stable string bit models [PDF]

open access: yesPhysical Review D, 2014
26 pages, 7 figures, error corrected in eq (81) and typos ...
Sun, Songge, Thorn, Charles B.
openaire   +2 more sources

String-Generated Gravity Models [PDF]

open access: yesPhysical Review Letters, 1985
Expansion of supersymmetric string theory suggests that the leading quadratic curvature correction to the Einstein action is the Gauss-Bonnet invariant. We show that this model has both flat and anti-de Sitter space as solutions, but that the cosmological branch is unstable, because the graviton becomes a ghost there: The theory solves its own ...
Boulware, David G., Deser, S.
openaire   +3 more sources

Machine learning string standard models [PDF]

open access: yesPhysical Review D, 2022
We study machine learning of phenomenologically relevant properties of string compactifications, which arise in the context of heterotic line bundle models. Both supervised and unsupervised learning are considered. We find that, for a fixed compactification manifold, relatively small neural networks are capable of distinguishing consistent line bundle ...
Deen, R., He, Y-H., Lee, S-J., Lukas, A.
openaire   +5 more sources

On physical models in V.I. Gulyayev's three papers on drill string whirling and torsional vibrations

open access: yesPetroleum, 2020
This paper introduces physical models of drill string whirling and torsional vibrations and analyses the physical models in V.I. Gulyayev's three papers on drill string whirling and torsional vibrations: “V.I. Gulyayev, L.V.
Zifeng Li, Chaoyue Zhang, Guangming Song
doaj   +1 more source

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