Results 121 to 130 of about 16,257,561 (327)
On Four-Dimensional Compactifications of F-Theory [PDF]
, 1997 Branches of moduli space of F-theory in four dimensions are investigated. The transition between two branches is described as a 3-brane-instanton transition on a 7-brane.
Affleck +33 more
core +4 more sources
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Orientifold limits of singular F-theory vacua
Nuclear Physics B, 2020 We construct global orientifold limits of singular F-theory vacua whose associated gauge groups are SO(3), SO(5), SO(6), F4, SU(4), and Spin(7). For each limit we show a universal tadpole relation is satisfied, which is a homological identity whose ...
James Fullwood, Dongxu Wang
doaj +1 more source
Anomaly cancelation in field theory and F-theory on a circle [PDF]
, 2015 A bstractWe study the manifestation of local gauge anomalies of four- and six-dimensional field theories in the lower-dimensional Kaluza-Klein theory obtained after circle compactification.
Thomas W. Grimm, A. Kapfer
semanticscholar +1 more source
Generalized Green-Schwarz mechanism in F theory [PDF]
, 1996 We derive the anomaly 8-form of 6-dimensional gauge theories arising in F theory compactifications on elliptic Calabi-Yau threefolds. The result allows to determine the matter content of certain such theories in terms of intersection numbers on the base ...
Berglund +12 more
core +3 more sources
On E 8 and F-theory GUTs [PDF]
Journal of High Energy Physics, 2015 33 ...
Baume, Florent +2 more
openaire +3 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
F-theory with hyperelliptic fibrations
Journal of High Energy PhysicsWe discuss the role of hyperelliptic fibrations in F-theory. For each even integer n we give a noncompact Calabi-Yau threefold X containing a hyperelliptically fibered surface Y, such that X and Y are homotopy equivalent and c 2(X) = n.
E. Ballico +3 more
doaj +1 more source
Vortex spin-torque oscillator stabilized by phase locked loop using integrated circuits
AIP Advances, 2017 Spin-torque nano-oscillators (STO) are candidates for the next technological implementation of spintronic devices in commercial electronic systems.
Martin Kreissig +11 more
doaj +1 more source
Yukawa hierarchies at the point of E8 in F-theory [PDF]
, 2015 A bstractWe analyse the structure of Yukawa couplings in local SU(5) F-theory models with E8 enhancement. In this setting the E8 symmetry is broken down to SU(5) by a 7-brane configuration described by T-branes, all the Yukawa couplings are generated in ...
F. Marchesano, D. Regalado, G. Zoccarato
semanticscholar +1 more source