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 …

A bstract We discuss quantum gravitational effects in Einstein theory coupled to periodic
axion scalars to analyze the viability of several proposals to achieve superplanckian axion …

A bstract String theory axions are interesting candidates for fields whose potential might be
controllable over super-Planckian field ranges and therefore as possible candidates for …

A bstract Early Dark Energy (EDE) is a promising model to resolve the Hubble Tension, that,
informed by Cosmic Microwave Background data, features a generalization of the potential …

We present a new model of large field inflation along a winding trajectory in the field space
of two axionic fields, where the “axions” originate from the complex structure moduli sector of …

A bstract Axions with broken discrete shift symmetry (axion monodromy) have recently
played a central role both in the discussion of inflation and the 'relaxion'approach to the …

A bstract Moduli stabilisation in superstring compactifications on Calabi-Yau orientifolds
remains a key challenge in the search for realistic string vacua. In particular, odd moduli …

A bstract Early Dark Energy (EDE) is a prominent model to resolve the Hubble tension,
which employs a dynamical axion with a periodic potential. In this work, we take first steps …

Successful inflationary models should (i) describe the data well;(ii) arise generically from
sensible UV completions;(iii) be insensitive to detailed fine-tunings of parameters and (iv) …