These notes consist of 3 lectures on celestial holography given at the Pre-Strings school
2021. We start by reviewing how semiclassically, the subleading soft graviton theorem …

A short, graduate-level synthesis of recent developments in theoretical physics, from a
pioneer in the field Lectures on the Infrared Structure of Gravity and Gauge Theory presents …

We provide evidence that the classical scattering of two spinning black holes is controlled by
the soft expansion of exchanged gravitons. We show how an exponentiation of Cachazo …

It has recently been shown that Bondi–van der Burg–Metzner–Sachs supertranslation
symmetries imply an infinite number of conservation laws for all gravitational theories in …

The four-dimensional (4D) Lorentz group SL (2, C) acts as the two-dimensional (2D) global
conformal group on the celestial sphere at infinity where asymptotic 4D scattering states are …

A bstract It is shown that black hole spacetimes in classical Einstein gravity are
characterized by, in addition to their ADM mass M, momentum\(\overrightarrow {P}\), angular …

We study solutions of the Klein-Gordon, Maxwell, and linearized Einstein equations in R 1,
d+ 1 that transform as d-dimensional conformal primaries under the Lorentz group SO (1, d+ …

JHEP08(2014)058 Page 1 JHEP08(2014)058 Published for SISSA by Springer Received: July 16,
2014 Accepted: July 17, 2014 Published: August 11, 2014 Semiclassical Virasoro symmetry of the …

A bstract We study two-dimensional celestial conformal field theory describing four-
dimensional\(\mathcal {N}\)= 1 supergravity/Yang-Mills systems and show that the …

A bstract The infinite tower of positive-helicity soft gravitons in any minimally coupled, tree-
level, asymptotically flat four-dimensional (4D) gravity was recently shown to generate aw …