Amid all candidates of physics beyond the Standard Model, string theory provides a unique
proposal for incorporating gauge and gravitational interactions. In string theory, a four …

We review particle physics model building in type IIB string theory and F-theory. This is a
region in the landscape where in principle many of the key ingredients required for a …

Motivated by the recent CDF measurement of the W-boson mass, we study string-based
particle physics models which can accommodate this deviation from the Standard Model …

These lecture notes are devoted to formal and phenomenological aspects of F-theory. We
begin with a pedagogical introduction to the general concepts of F-theory, covering classic …

The existence of Abelian gauge symmetries in four-dimensional F-theory compactifications
depends on the global geometry of the internal Calabi-Yau four-fold and has important …

We introduce T-branes, or “triangular branes”, which are novel non-abelian bound states of
branes characterized by the condition that on some loci, their matrix of normal deformations …

We use Higgs bundles to study the 3D N= 1 vacua obtained from M-theory compactified on a
local S pin (7) space given as a four-manifold M 4 of ADE singularities with further generic …

We construct global F-theory GUT models on del Pezzo surfaces in compact Calabi–Yau
fourfolds realized as complete intersections of two hypersurface constraints. The …

We analyze constraints for embedding local SU (5) F-theory GUTs into consistent
compactifications and construct explicit three-generation models based on the geometry of …

A bstract T-branes are a non-abelian generalization of intersecting branes in which the
matrix of normal deformations is nilpotent along some subspace. In this paper we study the …