A bstract We propose a framework for treating F-theory directly, without resolving or
deforming its singularities. This allows us to explore new sectors of gauge theories …

A bstract We demonstrate how non-simply-laced gauge and flavor symmetries arise in F-
theory on spaces with non-isolated singularities. The breaking from a simply-laced symmetry …

A bstract We provide a set of tools for analyzing the geometry of elliptically fibered Calabi-
Yau manifolds, starting with a description of the total space rather than with a Weierstrass …

We initiate a systematic investigation of F-theory on elliptic fibrations with singularities which
cannot be resolved without breaking the Calabi–Yau condition, corresponding to Q-factorial …

A bstract Computing the exact spectrum of charged massless matter is a crucial step towards
understanding the effective field theory describing F-theory vacua in four dimensions. In this …

A bstract We analyze exotic matter representations that arise on singular seven-brane
configurations in F-theory. We develop a general framework for analyzing such …

A bstract We construct a class of supersymmetric vacua of type IIB string theory describing
systems of three-and seven-branes non-perturbatively completed by brane instantons. The …

A bstract F-theory compactified on singular, elliptically fibered Calabi-Yau five-folds gives
rise to two-dimensional gauge theories preserving N=(0, 2) supersymmetry. In this paper we …

A bstract U (1) gauge symmetries in F-theory are expected to manifest themselves as
codimension three singularities of Calabi-Yau fourfolds. However, some of these are known …

A bstract In this paper we study the 6d localized charged matter spectrum of F-theory directly
on a singular elliptic Calabi-Yau 3-fold, ie without smoothing via resolution or deformation of …