Celestial holography: An asymptotic symmetry perspective
L Donnay - Physics Reports, 2024 - Elsevier
We review the role that infinite-dimensional symmetries arising at the boundary of
asymptotically flat spacetimes play in the context of the celestial holography program. Once …
asymptotically flat spacetimes play in the context of the celestial holography program. Once …
The infrared structure of perturbative gauge theories
Infrared divergences in the perturbative expansion of gauge theory amplitudes and cross
sections have been a focus of theoretical investigations for almost a century. New insights …
sections have been a focus of theoretical investigations for almost a century. New insights …
Lectures on celestial holography
AM Raclariu - arxiv preprint arxiv:2107.02075, 2021 - arxiv.org
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 …
2021. We start by reviewing how semiclassically, the subleading soft graviton theorem …
Holographic symmetry algebras for gauge theory and gravity
A bstract All 4D gauge and gravitational theories in asymptotically flat spacetimes contain an
infinite number of non-trivial symmetries. They can be succinctly characterized by …
infinite number of non-trivial symmetries. They can be succinctly characterized by …
Celestial amplitudes from UV to IR
A bstract Celestial amplitudes represent 4D scattering of particles in boost, rather than the
usual energy-momentum, eigenstates and hence are sensitive to both UV and IR physics …
usual energy-momentum, eigenstates and hence are sensitive to both UV and IR physics …
Celestial holography
Celestial holography proposes a duality between the gravitational $\mathcal {S} $-matrix
and correlators in a conformal field theory living on the celestial sphere. In this white paper …
and correlators in a conformal field theory living on the celestial sphere. In this white paper …
Linking the singularities of cosmological correlators
A bstract Much of the structure of cosmological correlators is controlled by their singularities,
which in turn are fixed in terms of flat-space scattering amplitudes. An important challenge is …
which in turn are fixed in terms of flat-space scattering amplitudes. An important challenge is …
Carrollian amplitudes and celestial symmetries
A bstract Carrollian holography aims to express gravity in four-dimensional asymptotically
flat spacetime in terms of a dual three-dimensional Carrollian CFT living at null infinity …
flat spacetime in terms of a dual three-dimensional Carrollian CFT living at null infinity …
Perturbatively exact w1+∞ asymptotic symmetry of quantum self-dual gravity
A Ball, SA Narayanan, J Salzer… - Journal of High Energy …, 2022 - Springer
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 …
level, asymptotically flat four-dimensional (4D) gravity was recently shown to generate aw …
Loop corrections to celestial amplitudes
We study the effect of loop corrections to conformal correlators on the celestial sphere at null
infinity. We first analyze finite one-loop celestial amplitudes in pure Yang-Mills theory and …
infinity. We first analyze finite one-loop celestial amplitudes in pure Yang-Mills theory and …