We present a pedagogical overview of flux compactifications in string theory, from the basic
ideas to the most recent developments. We concentrate on closed-string fluxes in type-II …

M theory compactifications on G2 holonomy manifolds, whilst supersymmetric, require
singularities in order to obtain non-Abelian gauge groups, chiral fermions and other …

A bstract We observe a direct relation between the existence of fundamental axionic strings,
dubbed EFT strings, and infinite distance limits in 4d\(\mathcal {N}\)= 1 EFTs coupled to …

A geometrical structure on even‐dimensional manifolds is defined which generalizes the
notion of a Calabi–Yau manifold and also a symplectic manifold. Such structures are of …

A bstract Infinite distance limits in the moduli space of a quantum gravity theory are
characterized by having infinite towers of states becoming light, as dictated by the Distance …

This article consists of some loosely related remarks about the geometry of G_2-structures
on 7-manifolds and is partly based on old unpublished joint work with two other people: F …

We show how certain diffeomorphism-invariant functionals in dimensions 6, 7 and 8
generate in a natural way special geometrical structures in these dimensions: metrics of …

This graduate level text covers an exciting and active area of research at the crossroads of
several different fields in Mathematics and Physics. In Mathematics it involves Differential …

THE INTRINSIC TORSION OF SU(3) AND G2 STRUCTURES Introduction Let G be a
subgroup of SO(n). A G-structure on a smooth manifold M Page 1 THE INTRINSIC …

The N= 1 effective action for generic type IIA Calabi–Yau orientifolds in the presence of
background fluxes is computed from a Kaluza–Klein reduction. The Kähler potential, the …