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 …

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 perform an extensive analysis of the statistics of axion masses and interactions in
compactifications of type IIB string theory, and we show that black hole superradiance …

The Weak Gravity Conjecture holds that in a theory of quantum gravity, any gauge force
must mediate interactions stronger than gravity for some particles. This statement has …

A bstract We explore the notion of approximate global symmetries in quantum field theory
and quantum gravity. We show that a variety of conjectures about quantum gravity, including …

A bstract We study the topological properties of Calabi-Yau threefold hypersurfaces at large
h 1, 1. We obtain two million threefolds X by triangulating polytopes from the Kreuzer-Skarke …

Astrophysical observations of spinning black holes, which span 5 M⊙≲ M BH≲ 5× 10 8 M⊙,
can be used to exclude the existence of certain massive bosons via the superradiance …

A bstract Moduli stabilisation in string compactifications with many light scalars remains a
major blind-spot in the string landscape. In these regimes, analytic methods cease to work …

A bstract We study a single field axion inflation model in the presence of an SU (2) gauge
field with a small vev. In order to make the analysis as model-independent as possible, we …

We construct analytic and numerical solutions of the Fokker-Planck equation that arises in
the context of stochastic inflation. We use these solutions to derive necessary conditions for …