The Swampland program aims to distinguish effective theories which can be completed into
quantum gravity in the ultraviolet from those which cannot. This article forms an introduction …

We present a brief overview of attempts to construct de Sitter vacua in string theory and
explain how the results of this 20-year endeavor could point to the fact that string theory …

The past two decades have seen transformative advances in cosmology and string theory.
Observations of the cosmic microwave background have revealed strong evidence for …

This is a review article about neutrino mass and mixing and flavour model building
strategies based on modular symmetry. After an introduction to neutrino mass and lepton …

This review article provides a pedagogical introduction into various classes of chiral string
compactifications to four dimensions with D-branes and fluxes. The main concern is to …

Modular flavor symmetries provide us with a very compelling approach to the flavor problem.
It has been argued that moduli values close to some special values like τ= i or τ= ω provide …

A bstract We discuss N= 1 supergravity inflationary models based on two chiral multi-plets,
the inflaton and the goldstino superfield. Using superconformal methods for these models …

Using a 10D lift of nonperturbative volume stabilization in type IIB string theory, we study the
limitations for obtaining de Sitter vacua. Based on this we find that the simplest Kachru …

A bstract We describe in detail how the spectrum of a single anti-D3-brane in four-
dimensional orientifolded IIB string models reproduces precisely the field content of a …

We subject the phenomenologically successful large volume scenario of hep-th/0502058 to
a first consistency check in string theory. In particular, we consider whether the expansion of …