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 consider the status of black hole (BH) solutions with nontrivial scalar fields but no gauge
fields, in four-dimensional asymptotically flat spacetimes, reviewing both classical results …

Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

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 …

The past two decades have seen transformative advances in cosmology and string theory.
Observations of the cosmic microwave background have revealed strong evidence for …

A bstract Swampland criteria like the Weak Gravity Conjecture should not only apply to
particles, but also to other lower-codimension charged objects in 4d EFTs like strings and …

We discuss aspects of global and gauged symmetries in quantum field theory and quantum
gravity, focusing on discrete gauge symmetries. An effective Lagrangian description of Z p …

We show that the large-N limits of certainconformal field theories in various dimensions
includein their Hilbert space a sector describing supergravityon the product of anti-de Sitter …

We suggest a means of obtaining certain Green's functions in 3+ 1-dimensional N= 4
supersymmetric Yang-Mills theory with a large number of colors via non-critical string theory …

Heavy ion collision experiments recreating the quark-gluon plasma that filled the nascent
universe have established that it is a nearly perfect liquid that flows with such minimal …