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 …

Axions comprise a broad class of particles that can play a major role in explaining the
unknown aspects of cosmology. They are also well-motivated within high energy physics …

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 …

Ultralight axions (ULAs) with masses in the range 1 0-33 eV≤ ma≤ 1 0-20 eV are motivated
by string theory and might contribute to either the dark-matter or dark-energy densities of the …

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 …

We provide a user's guide to version 1.0 of the software package CYTools, which we
designed to compute the topological data of Calabi-Yau hypersurfaces in toric varieties …

Axionlike particle (ALP)–photon couplings are modeled in large ensembles of string vacua
and random matrix theories. In all cases, the effective coupling increases polynomially in the …

A bstract The classification of 4D reflexive polytopes by Kreuzer and Skarke allows for a
systematic construction of Calabi-Yau hypersurfaces as fine, regular, star triangulations …

A bstract Several recent works [1-3] have claimed that the Weak Gravity Conjecture (WGC)
excludes super-Planckian displacements of axion fields, and hence large-field axion …