Results 1 to 10 of about 16,274,002 (260)

F-theory superspace

open access: yesJournal of High Energy Physics, 2021
We consider, at the linearized level, the superspace formulation of lower-dimensional F-theory. In particular, we describe the embedding of 3D Type II super-gravity of the superstring, or 4D, N = 1 supergravity of M-theory, into the corresponding F ...
William D. Linch, Warren Siegel
doaj   +1 more source

Classification of Spot-Welded Joints in Laser Thermography Data Using Convolutional Neural Networks

open access: yesIEEE Access, 2021
Spot welding is a crucial process step in various industries. However, classification of spot welding quality is still a tedious process due to the complexity and sensitivity of the test material, which drain conventional approaches to its limits.
Linh Kastner   +6 more
doaj   +1 more source

F-theory with worldvolume sectioning

open access: yesJournal of High Energy Physics, 2021
We describe the worldvolume for the bosonic sector of the lower-dimensional F-theory that embeds 5D, N=1 M-theory and the 4D type II superstring. This theory is a complexification of the fundamental 5-brane theory that embeds the 4D, N=1 M-theory of the ...
William D. Linch, Warren Siegel
doaj   +1 more source

F-theory vacua and α′-corrections

open access: yesJournal of High Energy Physics, 2020
In this work we analyze F-theory and Type IIB orientifold compactifications to study α′-corrections to the four-dimensional, N $$ \mathcal{N} $$ = 1 effective actions.
Matthias Weissenbacher
doaj   +1 more source

Monopolist’s mark-up and the elasticity of substitution

open access: yesCroatian Operational Research Review, 2017
This paper analyzes the mark-up of the price of a product over marginal costs for a monopolist using Appelbaum’s theoretical model. The profit maximization model of an industry that uses the monopolist’s product as its input is formulated. Our goal is to
Ilko Vrankić   +2 more
doaj   +1 more source

F-theory from fundamental five-branes

open access: yesJournal of High Energy Physics, 2021
We describe the worldvolume for the bosonic sector of the lower-dimensional F-theory that embeds 4D, N=1 M-theory and the 3D Type II superstring. The worldvolume (5-brane) theory is that of a single 6D gauge 2-form X MN (σ P ) whose field strength is ...
William D. Linch, Warren Siegel
doaj   +1 more source

Covariant formulation of f(Q) theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
In Symmetric Teleparallel General Relativity, gravity is attributed to the non-metricity. The so-called “coincident gauge” is usually taken in this theory so that the affine connection vanishes and the metric is the only fundamental variable.
Dehao Zhao
doaj   +1 more source

Sparks as radioemitters

open access: yesComptes Rendus. Physique, 2020
In the early experiments on radiocommunication, Hertz, Branly, Lodge, Marconi used as emitter a spark produced by a high electric tension. Why did this spark emit an electromagnetic radiation?
Villain, Jacques, Dorbolo, Stéphane
doaj   +1 more source

F-theory and AdS3/CFT2

open access: yesJournal of High Energy Physics, 2017
We construct supersymmetric AdS3 solutions in F-theory, that is Type IIB supergravity with varying axio-dilaton, which are holographically dual to 2d N = 0 4 $$ \mathcal{N}=\left(0,4\right) $$ superconformal field theories with small superconformal ...
Christopher Couzens   +4 more
doaj   +1 more source

Axion inflation in F-theory

open access: yesPhysics Letters B, 2014
We study the dynamics of axion-like fields in F-theory and suggest that they can serve as inflatons in models of natural inflation. The axions arise from harmonic three-forms on the F-theory compactification space and parameterize a complex torus that ...
Thomas W. Grimm
doaj   +1 more source

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