Results 11 to 20 of about 15,537,269 (305)

F-theory superspace [PDF]

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   +3 more sources

F-theory with worldvolume sectioning [PDF]

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   +3 more sources

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   +3 more sources

Algebraic description of G‐flux in F‐theory: new techniques for F‐theory phenomenology [PDF]

open access: yesFortschritte der Physik, 2012
AbstractWe give a global algebraic description of the four‐form flux in F‐theory. We present how to compute its D3‐tadpole and how to calculate the number of four‐dimensional chiral states at the intersection of 7‐branes directly in F‐theory. We check that, in the weak coupling limit, we obtain the same results as using perturbative type IIB string ...
Braun, Andreas P.   +2 more
openaire   +6 more sources

On topological F-theory [PDF]

open access: yesJournal of High Energy Physics, 2005
We consider the construction of a topological version of F-theory on a particular $Spin(7)$ 8-manifold which is a Calabi-Yau 3-fold times a 2-torus. We write an action for this theory in eight dimensions and reduce it to lower dimensions using Hitchin's gradient flow method.
Anguelova, L.   +2 more
openaire   +7 more sources

Towards bootstrapping F-theory

open access: yesJournal of High Energy Physics
We consider type IIB string theory with N D3 branes and various configurations of sevenbranes, such that the string coupling g s is fixed to a constant finite value.
Connor Behan   +2 more
doaj   +4 more sources

On the frozen F-theory landscape

open access: yesJournal of High Energy Physics
We study 6d $$\mathcal{N}$$ = (1, 0) supergravity theories arising in the frozen phase of F-theory. For each of the known global models, we construct an F-theory compactification in the unfrozen phase with an identical non-abelian gauge algebra and ...
David R. Morrison, Benjamin Sung
doaj   +4 more sources

Expanding F-theory [PDF]

open access: yesJournal of High Energy Physics, 2007
13 pages v2: refs ...
Kleban, Matthew, Redi, Michele
openaire   +2 more sources

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

Vector Bundles and F Theory [PDF]

open access: yesCommunications in Mathematical Physics, 1997
93 pp., harvmac. Section 4.4 has been extended with additional Comments relating F theory intermediate Jacobians to heterotic string ...
Friedman, Robert   +2 more
openaire   +3 more sources

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