Carroll stories

J de Boer, J Hartong, NA Obers, W Sybesma… - Journal of High Energy …, 2023 - Springer
A bstract We study various aspects of the Carroll limit in which the speed of light is sent to
zero. A large part of this paper is devoted to the quantization of Carroll field theories. We …

Bridging Carrollian and celestial holography

L Donnay, A Fiorucci, Y Herfray, R Ruzziconi - Physical Review D, 2023 - APS
Gravity in 4 d asymptotically flat spacetime constitutes the archetypal example of a
gravitational system with leaky boundary conditions. Pursuing our previous analysis of …

Carrollian approach to 1+ 3D flat holography

A Saha - Journal of High Energy Physics, 2023 - Springer
A bstract The isomorphism between the (extended) BMS 4 algebra and the 1+ 2D Carrollian
conformal algebra hints towards a co-dimension one formalism of flat holography with the …

AdS Witten diagrams to Carrollian correlators

A Bagchi, P Dhivakar, S Dutta - Journal of High Energy Physics, 2023 - Springer
A bstract Carrollian Conformal Field Theories (CFTs) have been proposed as co-dimension
one holographic duals to asymptotically flat spacetimes as opposed to Celestial CFTs which …

Magic fermions: Carroll and flat bands

A Bagchi, A Banerjee, R Basu, M Islam… - Journal of High Energy …, 2023 - Springer
A bstract The Carroll algebra is constructed as the c→ 0 limit of the Poincare algebra and is
associated to symmetries on generic null surfaces. In this paper, we begin investigations of …

Holography in Flat Spacetimes: the case for Carroll

A Bagchi, P Dhivakar, S Dutta - Journal of High Energy Physics, 2024 - Springer
A bstract We compare and contrast the two approaches of holography in asymptotically flat
spacetimes, viz. the co-dimension two Celestial approach based on the Mellin …

Carrollian amplitudes and celestial symmetries

L Mason, R Ruzziconi, AY Srikant - Journal of High Energy Physics, 2024 - Springer
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 …

Conformal Carroll scalars with boosts

S Baiguera, G Oling, W Sybesma, BT Søgaard - SciPost Physics, 2023 - scipost.org
We construct two distinct actions for scalar fields that are invariant under local Carroll boosts
and Weyl transformations. Conformal Carroll field theories were recently argued to be …

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 …

Carrollian fluids and spontaneous breaking of boost symmetry

J Armas, E Have - Physical Review Letters, 2024 - APS
In the hydrodynamic regime, field theories typically have their boost symmetry
spontaneously broken due to the presence of a thermal rest frame although the associated …