167 citations · 1.6k across the 33 of their papers we have counts for
34 papers
Celestial amplitudes on electromagnetic backgrounds: T-duality from S-duality
Tristan McLoughlin, Nathan Moynihan, Andrea Puhm
What is the boundary holographic dual of S-duality for gauge theories in asymptotically flat space-times? Celestial amplitudes, by virtue of exhibiting holographic properties of th…
Asymptotic Symmetries for Logarithmic Soft Theorems in Gauge Theory and Gravity
Sangmin Choi, Alok Laddha, Andrea Puhm
Gauge theories and perturbative gravity in four dimensions are governed by a tower of infinite-dimensional symmetries which arise from tree-level soft theorems. However, aside from…
Celestial open strings at one-loop
Laura Donnay, Gaston Giribet, Hernán González +2
We study celestial amplitudes in string theory at one-loop. Celestial amplitudes describe scattering processes of boost eigenstates and relate to amplitudes in the more standard ba…
The correspondence between rotating black holes and fundamental strings
Nejc Čeplak, Roberto Emparan, Andrea Puhm +1
The correspondence principle between strings and black holes is a general framework for matching black holes and massive states of fundamental strings at a point where their physic…
Symmetries in Celestial CFT
Yorgo Pano, Andrea Puhm, Emilio Trevisani
We use tools from conformal representation theory to classify the symmetries associated to conformally soft operators in celestial CFT (CCFT) in general dimensions . The conform…
Celestial holography on Kerr-Schild backgrounds
Riccardo Gonzo, Tristan McLoughlin, Andrea Puhm
We explore the celestial holography proposal for non-trivial asymptotically flat backgrounds including the Coulomb field of a static and spinning point charge, their gravitational…
The SAGEX Review on Scattering Amplitudes, Chapter 11: Soft Theorems and Celestial Amplitudes
Tristan McLoughlin, Andrea Puhm, Ana-Maria Raclariu
The soft limits of scattering amplitudes have been extensively studied due to their essential role in the computation of physical observables in collider physics. The universal fac…
The SAGEX Review on Scattering Amplitudes
Gabriele Travaglini, Andreas Brandhuber, Patrick Dorey +35
This is an introduction to, and invitation to read, a series of review articles on scattering amplitudes in gauge theory, gravity, and superstring theory. Our aim is to provide an…
Goldilocks Modes and the Three Scattering Bases
Laura Donnay, Sabrina Pasterski, Andrea Puhm
We consider massless scattering from the point of view of the position, momentum, and celestial bases. In these three languages different properties of physical processes become ma…
Conformally Soft Fermions
Yorgo Pano, Sabrina Pasterski, Andrea Puhm
Celestial diamonds encode the global conformal multiplets of the conformally soft sector, elucidating the role of soft theorems, symmetry generators and Goldstone modes. Upon addin…
Revisiting the Conformally Soft Sector with Celestial Diamonds
Sabrina Pasterski, Andrea Puhm, Emilio Trevisani
Celestial diamonds encode the structure of global conformal multiplets in 2D celestial CFT and offer a natural language for describing the conformally soft sector. The operators ap…
Celestial Diamonds: Conformal Multiplets in Celestial CFT
Sabrina Pasterski, Andrea Puhm, Emilio Trevisani
We examine the structure of global conformal multiplets in 2D celestial CFT. For a 4D bulk theory containing massless particles of spin we cla…
Shifting Spin on the Celestial Sphere
Sabrina Pasterski, Andrea Puhm
We explore conformal primary wavefunctions for all half integer spins up to the graviton. Half steps are related by supersymmetry, integer steps by the classical double copy. The m…
Loops on the Celestial Sphere
Hernan A. Gonzalez, Andrea Puhm, Francisco Rojas
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…
Double Copy for Celestial Amplitudes
Eduardo Casali, Andrea Puhm
Celestial amplitudes which use conformal primary wavefunctions rather than plane waves as external states offer a novel opportunity to study properties of amplitudes with manifest…
Asymptotic Symmetries and Celestial CFT
Laura Donnay, Sabrina Pasterski, Andrea Puhm
We provide a unified treatment of conformally soft Goldstone modes which arise when spin-one or spin-two conformal primary wavefunctions become pure gauge for certain integer value…
Conformally Soft Theorem In Gravity
Andrea Puhm
A central feature of scattering amplitudes in gravity or gauge theory is the existence of a variety of energetically soft theorems which put constraints on the amplitudes. Celestia…
Conformally Soft Photons and Gravitons
Laura Donnay, Andrea Puhm, Andrew Strominger
The four-dimensional -matrix is reconsidered as a correlator on the celestial sphere at null infinity. Asymptotic particle states can be characterized by the point at which they…
Black hole memory effect
Laura Donnay, Gaston Giribet, Hernan A. Gonzalez +1
We compute the memory effect produced at the black hole horizon by a transient gravitational shockwave. As shown by Hawking, Perry, and Strominger (HPS) such a gravitational wave p…
Corrections in the relative entropy of black hole microstates
Ben Michel, Andrea Puhm
Inspired by the recent work of Bao and Ooguri (BO), we study the distinguishability of the black hole microstates from the thermal state as captured by the average of their relativ…
A rough end for smooth microstate geometries
Donald Marolf, Ben Michel, Andrea Puhm
Supersymmetric microstate geometries with five non-compact dimensions have recently been shown by Eperon, Reall, and Santos (ERS) to exhibit a non-linear instability featuring the…
(Non-adiabatic) string creation on nice slices in Schwarzschild black holes
Andrea Puhm, Francisco Rojas, Tomonori Ugajin
Nice slices have played a pivotal role in the discussion of the black hole information paradox as they avoid regions of strong spacetime curvature and yet smoothly cut through the…
Tunneling into Microstate Geometries: Quantum Effects Stop Gravitational Collapse
Iosif Bena, Daniel R. Mayerson, Andrea Puhm +1
Collapsing shells form horizons, and when the curvature is small classical general relativity is believed to describe this process arbitrarily well. On the other hand, quantum info…
AdS_3: the NHEK generation
Iosif Bena, Lucien Heurtier, Andrea Puhm
It was argued in arXiv:1203.4227 that the five-dimensional near-horizon extremal Kerr (NHEK) geometry can be embedded in String Theory as the infrared region of an infinite family…