Results 91 to 100 of about 16,257,561 (327)
On Flux Quantization in F-Theory
, 2012 We study the problem of four-form flux quantization in F-theory compactifications. We prove that for smooth, elliptically fibered Calabi-Yau fourfolds with a Weierstrass representation, the flux is always integrally quantized.
A Collinucci +42 more
core +1 more source
Geometric constraints in dual F-theory and heterotic string compactifications [PDF]
, 2014 We systematically analyze a broad class of dual heterotic and F-theory models that give four-dimensional supergravity theories, and compare the geometric constraints on the two sides of the duality.
Anderson, Lara B., Taylor, Washington
core +5 more sources
Decoupling gravity in F-theory [PDF]
Advances in Theoretical and Mathematical Physics, 2011 46 pages, 4 figures. References added.
openaire +3 more sources
FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source
F. VON HAYEK’S THEORY OF SPONTANEOUS ORDER
Вісник Київського національного університету імені Тараса Шевченка. Серія Економіка, 2013 The essence and the genesis of spontaneous order are disclosed in the context of critical analysis of constructivism. The author’s approach to the definition of the characteristic features of the spontaneous order is proposed.
О. Nesterenko
doaj +1 more source
F-theory and all things rational: surveying U(1) symmetries with rational sections [PDF]
, 2015 A bstractWe study elliptic fibrations for F-theory compactifications realizing 4d and 6d supersymmetric gauge theories with abelian gauge factors. In the fibration these U(1) symmetries are realized in terms of additional rational section.
C. Lawrie +2 more
semanticscholar +1 more source
On Condensation of Closed-string Tachyons [PDF]
, 2001 An F-theory dual of a nonsupersymmetric orientifold is considered. It is argued that the condensation of both open and closed string tachyons in the orientifold corresponds to the annihilation of branes and anti-branes in the F-theory dual. The end-point
Dabholkar, Atish
core +2 more sources
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Journal 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 +5 more sources
An action for F-theory: SL ( 2 ) R + exceptional field theory [PDF]
, 2015 We construct the 12-dimensional exceptional field theory (EFT) associated to the group SL ( 2 ) × R + . Demanding the closure of the algebra of local symmetries leads to a constraint, known as the section condition, that must be imposed on all fields ...
D. Berman +3 more
semanticscholar +1 more source