Abstract Six-dimensional (6D) superconformal field theories (SCFTs) occupy a central place
in the study of quantum field theories encountered in high energy theory. This article reviews …

Aspects of superstring cosmology are reviewed with an emphasis on the cosmological
implications of duality symmetries in the theory. The string effective actions are summarized …

We give a brief overview of the string landscape and techniques used to construct string
compactifications. We then explain how this motivates the notion of the swampland and …

A bstract In the Emergence Proposal in Quantum Gravity it is conjectured that all light-
particle kinetic terms are absent in the fundamental ultraviolet theory and are generated by …

A bstract As a refinement of the Swampland Distance Conjecture, we propose that a
quantum gravitational theory in an infinite distance limit of its moduli space either …

A bstract In a quantum theory of gravity, the species scale Λ s can be defined as the scale at
which corrections to the Einstein action become important or alternatively as codifying the …

A bstract We test various conjectures about quantum gravity for six-dimensional string
compactifications in the framework of F-theory. Starting with a gauge theory coupled to …

We propose a graph-based approach to 5d superconformal field theories (SCFTs) based on
their realization as M-theory compactifications on singular elliptic Calabi-Yau threefolds …

In the context of string theory, axions appear to provide the most plausible solution of the
strong CP problem. However, as has been known for a long time, in many string-based …

String theory is one of the most exciting and challenging areas of modern theoretical
physics. This book guides the reader from the basics of string theory to recent developments …