We review applications of string theory to cosmology, from primordial times to the present-
day accelerated expansion. Starting with a brief overview of cosmology and string …

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 …

De Sitter solutions have been recently conjectured to be incompatible with quantum gravity.
In this paper we critically assess the progress and challenges of different mechanisms to …

A bstract We examine the mechanism of moduli stabilization by fluxes in the limit of a large
number of moduli. We conjecture that one cannot stabilize all complex-structure moduli in F …

Double field theory (DFT) is a proposal to incorporate T-duality, a distinctive symmetry of
string theory, as a symmetry of a field theory defined on a double configuration space. The …

The extensive computer-aided search applied in Bena et al.(The tadpole problem, 2020) to
find the minimal charge sourced by the fluxes that stabilize all the (flux-stabilizable) moduli …

A bstract We consider a flux formulation of Double Field Theory in which fluxes are
dynamical and field-dependent. Gauge consistency imposes a set of quadratic constraints …

This review provides an introduction to non-geometric backgrounds in string theory. Starting
from a discussion of T-duality, geometric and non-geometric torus-fibrations are reviewed …

A bstract In this paper, we employ genetic algorithms to explore the landscape of type IIB flux
vacua. We show that genetic algorithms can efficiently scan the landscape for viable …

Recently it has been conjectured that string theory does not allow for dS vacua or dS
extrema. To scrutinize such a conjecture, it is important to study concrete string theory …