The Swampland program aims to determine the constraints that an effective field theory must
satisfy to be consistent with a UV embedding in a quantum gravity theory. Different …

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 provide an overview of the string landscape and the Swampland program. Our review of
the string landscape covers the worldsheet and spacetime perspectives, including vacua …

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 …

The swampland is the set of seemingly consistent low-energy effective field theories that
cannot be consistently coupled to quantum gravity. In this review we cover some of the …

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 …

We prove a version of the Weak Gravity Conjecture for 6d F-theory or heterotic string
compactifications with 8 supercharges. This sharpens our previous analysis by including …

The weak gravity conjecture states that quantum gravity theories have to contain a charged
state with a charge-to-mass ratio bigger than unity. By studying unitarity and causality …

A bstract The scale at which quantum gravity becomes manifest, the species scale Λ s, has
recently been argued to take values parametrically lower than the Planck scale. We use …