Light-ray operators in conformal field theory

P Kravchuk, D Simmons-Duffin - Journal of High Energy Physics, 2018 - Springer
A bstract We argue that every CFT contains light-ray operators labeled by a continuous spin
J. When J is a positive integer, light-ray operators become integrals of local operators over a …

Flat space amplitudes and conformal symmetry of the celestial sphere

S Pasterski, SH Shao, A Strominger - Physical Review D, 2017 - APS
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 …

Conformal basis for flat space amplitudes

S Pasterski, SH Shao - Physical Review D, 2017 - APS
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+ …

[图书][B] EPFL lectures on conformal field theory in D≥ 3 dimensions

S Rychkov - 2017 - Springer
EPFL lectures on conformal field theory in D≥ 3 dimensions 123 SPRINGER BRIEFS IN
PHYSICS Slava Rychkov EPFL Lectures on Conformal Field Theory in D≥ 3 Dimensions Page …

Spinning conformal correlators

MS Costa, J Penedones, D Poland… - Journal of High Energy …, 2011 - Springer
A bstract We develop the embedding formalism for conformal field theories, aimed at doing
computations with symmetric traceless operators of arbitrary spin. We use an indexfree …

An embedding space approach to Carrollian CFT correlators for flat space holography

J Salzer - Journal of High Energy Physics, 2023 - Springer
A bstract Carrollian conformal field theories (carrollian CFTs) are natural field theories on
null infinity of an asymptotically flat spacetime or, more generally, geometries with conformal …

4D scattering amplitudes and asymptotic symmetries from 2D CFT

C Cheung, A de la Fuente, R Sundrum - Journal of High Energy Physics, 2017 - Springer
A bstract We reformulate the scattering amplitudes of 4D flat space gauge theory and gravity
in the language of a 2D CFT on the celestial sphere. The resulting CFT structure exhibits an …

The light-ray OPE and conformal colliders

M Koloğlu, P Kravchuk, D Simmons-Duffin… - Journal of High Energy …, 2021 - Springer
A bstract We derive a nonperturbative, convergent operator product expansion (OPE) for null-
integrated operators on the same null plane in a CFT. The objects appearing in the …

A natural language for AdS/CFT correlators

AL Fitzpatrick, J Kaplan, J Penedones, S Raju… - Journal of High Energy …, 2011 - Springer
A bstract We provide dramatic evidence that 'Mellin space'is the natural home for correlation
functions in CFTs with weakly coupled bulk duals. In Mellin space, CFT correlators have …

Spinning conformal blocks

MS Costa, J Penedones, D Poland… - Journal of High Energy …, 2011 - Springer
A bstract For conformal field theories in arbitrary dimensions, we introduce a method to
derive the conformal blocks corresponding to the exchange of a traceless symmetric tensor …