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 …

These lecture notes provide a pedagogical introduction, with exercises, to the techniques
used in attempts to construct vacua with stabilized moduli in string theory. The reader is only …

It has been notoriously difficult to construct a meta-stable de Sitter (dS) vacuum in string
theory in a controlled approximation. This suggests the possibility that meta-stable dS …

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 …

A bstract We consider the swampland distance and de Sitter conjectures, of respective order
one parameters λ and c. Inspired by the recent Trans-Planckian Censorship conjecture …

A bstract Type II string theory and M-theory admit flux configurations that break
supersymmetry below the Kaluza-Klein scale. These backgrounds play a central role in most …

We provide a detailed discussion of the main theoretical and phenomenological challenges
of quintessence model building in any numerically controlled regime of the moduli space of …

A bstract We study the vacua of 4d heterotic toroidal orbifolds using effective theories
consisting of an overall Kähler modulus, the dilaton, and non-perturbative corrections to both …

Motivated by its potential use as a starting point for solving various cosmological constant
problems, we study F‐theory compactified on the warped product where Y8 is a manifold …

We study the existence and stability of classical de Sitter solutions of type II supergravities
with parallel‐branes and orientifold‐planes. Together with the dilaton and volume scalar …