223 citations · 1.4k across the 32 of their papers we have counts for
32 papers
Higher-spin charges and the algebra in (A)dS
Lorenzo Di Giacomo, Maitá Micol, Daniele Pranzetti +1
We consider -dimensional asymptotically locally (anti-)de Sitter ((A)dS) spacetimes with boundary conditions allowing for gravitational flux. We construct an infinite to…
On bulk reconstruction in Lorentzian AdS and its flat space limit
Núria Navarro, Ana-Maria Raclariu
We revisit the reconstruction of a free quantum field in 4-dimensional Lorentzian Anti-de-Sitter (AdS) spacetime in terms of primary operators in the boundary 3d CFT (CFT).…
Null quantization, shadows and boost eigenfunctions in Lorentzian AdS
Núria Navarro, Ana-Maria Raclariu
We revisit the quantization of a free scalar in 4-dimensional (4d) Lorentzian Anti-de-Sitter spacetime (AdS). We derive solutions to the wave equation that diagonalize time tra…
Infinite towers of 2d symmetry algebras from Carrollian limit of 3d CFT
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
We consider the Carrollian limit of OPE blocks of scalar primaries, spin-1 currents and the stress tensor in 3-dimensional conformal field theory (CFT). We demonstrate that the…
An Infrared On-Shell Action and its Implications for Soft Charge Fluctuations in Asymptotically Flat Spacetimes
Temple He, Ana-Maria Raclariu, Kathryn M. Zurek
We study the infrared on-shell action of Einstein gravity in asymptotically flat spacetimes, obtaining an effective, gauge-invariant boundary action for memory and shockwave spacet…
Celestial amplitudes from conformal correlators with bulk-point kinematics
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
We show that two- and three-point celestial (C)CFT amplitudes can be directly obtained from correlation functions in a unitary Lorentzian CFT on $\mathbb{R}\times S^{d-…
Entanglement, Soft Modes, and Celestial CFT
Hong Zhe Chen, Robert Myers, Ana-Maria Raclariu
We revisit the calculation of vacuum entanglement entropy in free Maxwell theory in four-dimensional Minkowski spacetime. Weyl invariance allows for this theory to be embedded as a…
Entanglement, Soft Modes, and Celestial Holography
Hong Zhe Chen, Robert C. Myers, Ana-Maria Raclariu
We evaluate the vacuum entanglement entropy across a cut of future null infinity for free Maxwell theory in four-dimensional Minkowski spacetime. The Weyl invariance of 4D Maxwell…
On infinite symmetry algebras in Yang-Mills theory
Laurent Freidel, Daniele Pranzetti, Ana-Maria Raclariu
Similar to gravity, an infinite tower of symmetries generated by higher-spin charges has been identified in Yang-Mills theory by studying collinear limits or celestial operator pro…
From Shockwaves to the Gravitational Memory Effect
Temple He, Ana-Maria Raclariu, Kathryn M. Zurek
We study the relationship between shockwave geometries and the gravitational memory effect in four-dimensional asymptotically flat spacetime. In particular, we show the 't Hooft co…
Celestial Sector in CFT: Conformally Soft Symmetries
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
We show that time intervals of width in 3-dimensional conformal field theories (CFT) on the Lorentzian cylinder admit an infinite dimensional symmetry enhancement in the l…
A discrete basis for celestial holography
Laurent Freidel, Daniele Pranzetti, Ana-Maria Raclariu
Celestial holography provides a reformulation of scattering amplitudes in four dimensional asymptotically flat spacetimes in terms of conformal correlators of operators on the two…
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…
Eikonal Approximation in Celestial CFT
Leonardo Pipolo de Gioia, Ana-Maria Raclariu
We identify an eikonal regime in celestial CFT in which massless 2-2 scattering is dominated by t-channel exchange. We derive a formula for the celestial amplitude that resums…
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…
Higher spin dynamics in gravity and celestial symmetries
Laurent Freidel, Daniele Pranzetti, Ana-Maria Raclariu
In this paper we extract from a large- expansion of the vacuum Einstein's equations a dynamical system governing the time evolution of an infinity of higher-spin charges. Upon i…
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…
Sub-subleading Soft Graviton Theorem from Asymptotic Einstein's Equations
Laurent Freidel, Daniele Pranzetti, Ana-Maria Raclariu
We identify in Einstein gravity an asymptotic spin- charge aspect whose conservation equation gives rise, after quantization, to the sub-subleading soft theorem. Our treatment r…
Lectures on Celestial Holography
Ana-Maria Raclariu
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 impl…
Conformal Block Expansion in Celestial CFT
Alexander Atanasov, Walker Melton, Ana-Maria Raclariu +1
The 4D 4-point scattering amplitude of massless scalars via a massive exchange is expressed in a basis of conformal primary particle wavefunctions. This celestial amplitude is expa…
Scattering and the Celestial Torus
Alexander Atanasov, Adam Ball, Walker Melton +2
Analytic continuation from Minkowski space to split signature spacetime has proven to be a powerful tool for the study of scattering amplitudes. Here we show that, under th…
Celestial Amplitudes from UV to IR
Nima Arkani-Hamed, Monica Pate, Ana-Maria Raclariu +1
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. We show th…
Celestial Operator Products of Gluons and Gravitons
Monica Pate, Ana-Maria Raclariu, Andrew Strominger +1
The operator product expansion (OPE) on the celestial sphere of conformal primary gluons and gravitons is studied. Asymptotic symmetries imply recursion relations between products…