364 citations · 3k across the 43 of their papers we have counts for
44 papers
From Gross-Manes to Alday-Maldacena
Leonardo Pipolo de Gioia, Sabrina Pasterski, Pedro Vieira
Minimal surfaces govern the classical limit of several important observables in string theory. Two basic examples are the Gross--Manes saddle for high-energy string scattering in f…
Asymptotic charges as detectors and the memory effect in massive QED and perturbative quantum gravity
Brett Oertel, Ian Moult, Sabrina Pasterski
It has been shown that there are an infinite set of asymptotic symmetries in quantum gravity and QED, and this has been extended to dressed states in some cases. Here we rederive t…
Memory Correlators and Ward Identities in the 'in-in' Formalism
Ian Moult, Sruthi A. Narayanan, Sabrina Pasterski
The symmetries of asymptotically flat spacetimes impose constraints on observables at infinity. The consequences of this have been extensively explored for S-matrix elements, where…
Multiparticle States for the Flat Hologram
Justin Kulp, Sabrina Pasterski
We use the extrapolate dictionary to revisit the spectrum of operators in Celestial CFT. Under the Celestial CFT map, each state in the 4D Hilbert space should map to one in the 2D…
A Comment on Boundary Correlators: Soft Omissions and the Massless S-Matrix
Eivind Jørstad, Sabrina Pasterski
We revisit the extrapolate dictionary for massless scattering in flat spacetime and identify a soft contribution that is typically dropped from the saddle point approximation. We s…
Radiation in Holography
Luca Ciambelli, Sabrina Pasterski, Elisa Tabor
We show how to encode the radiative degrees of freedom in -dimensional asymptotically AdS spacetimes, using the boundary Cotton and stress tensors. Background radiation leads to…
Multiparticle Contributions to the Celestial OPE
Alfredo Guevara, Yangrui Hu, Sabrina Pasterski
We start by defining two-particle operators that appear in celestial CFT. We then show how to compute their OPE coefficients with the known single-particle operators at tree level…
A Chapter on Celestial Holography
Sabrina Pasterski
The Celestial Holography program encompasses recent efforts to understand the flat space hologram in terms of a CFT living on the celestial sphere. A key development instigating th…
Equating Extrapolate Dictionaries for Massless Scattering
Eivind Jørstad, Sabrina Pasterski, Atul Sharma
We study features of celestial CFT correlation functions when the bulk theory is itself a CFT. We show that conformal inversions in the bulk map boost eigenstates to shadow transfo…
Multicollinear Singularities in Celestial CFT
Adam Ball, Yangrui Hu, Sabrina Pasterski
The purpose of this paper is to study the holomorphic multicollinear limit of (celestial) amplitudes and use it to further investigate the double residue condition for (hard celest…
Detector Operators for Celestial Symmetries
Yangrui Hu, Sabrina Pasterski
This paper presents a systematic cataloging of the generators of celestial symmetries on phase space. Starting from the celestial OPEs, we first show how to extract a representatio…
Celestial amplitudes in an ambidextrous basis
Carmen Jorge-Diaz, Sabrina Pasterski, Atul Sharma
We start by constructing a conformally covariant improvement of the celestial light transform which keeps track of the mixing between incoming and outgoing states under finite Lore…
Revisiting the Shadow Stress Tensor in Celestial CFT
Shamik Banerjee, Sabrina Pasterski
We revisit the standard construction of the celestial stress tensor as a shadow of the subleading conformally soft graviton. In its original formulation there is an obstruction to…
Celestial Conformal Colliders
Yangrui Hu, Sabrina Pasterski
We start by observing that the light-ray operators featured in the conformal collider literature are celestial primaries. This allows us to rephrase the corresponding 4D CFT correl…
TF1 Snowmass Report: Quantum gravity, string theory, and black holes
Daniel Harlow, Shamit Kachru, Juan Maldacena +35
We give an overview of the field of quantum gravity, string theory and black holes summarizing various white papers in this subject that were submitted as part of the Snowmass proc…
Celestial Recursion
Yangrui Hu, Sabrina Pasterski
We examine the BCFW recursion relations for celestial amplitudes and how they inform the celestial bootstrap program. We start by recasting the celestial incarnation of the BCFW sh…
A Comment on Loop Corrections to the Celestial Stress Tensor
Sabrina Pasterski
In this note we show how the 1-loop exact correction to the subleading soft graviton theorem arising from IR divergences of scattering amplitudes matches onto the quadratic correct…
Celestial Geometry
Sebastian Mizera, Sabrina Pasterski
Celestial holography expresses -matrix elements as correlators in a CFT living on the night sky. Poincaré invariance imposes additional selection rules on the allowed…
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…
A Shorter Path to Celestial Currents
Sabrina Pasterski
Here we consider what happens when we lift a codimension-1 slice of the celestial sphere to a codimension-1 slice of the bulk spacetime in a manner that respects our ability to quo…
Mapping SYK to the Sky
Sabrina Pasterski, Herman Verlinde
The infrared behavior of gravity in 4D asymptotically flat spacetime exhibits a rich set of symmetries. This has led to a proposed holographic duality between the gravitational $\m…
Chaos in Celestial CFT
Sabrina Pasterski, Herman Verlinde
Celestial holography proposes a duality between gravitational scattering in asymptotically flat space-time and a conformal field theory living on the celestial sphere. Its dictiona…
Celestial Holography
Sabrina Pasterski, Monica Pate, Ana-Maria Raclariu
Celestial holography proposes a duality between the gravitational -matrix and correlators in a conformal field theory living on the celestial sphere. In this white pap…
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…