Celestial holography: An asymptotic symmetry perspective

L Donnay - Physics Reports, 2024 - Elsevier
We review the role that infinite-dimensional symmetries arising at the boundary of
asymptotically flat spacetimes play in the context of the celestial holography program. Once …

Flat from anti de Sitter

A Campoleoni, A Delfante, S Pekar… - Journal of High Energy …, 2023 - Springer
A bstract Ricci-flat solutions to Einstein's equations in four dimensions are obtained as the
flat limit of Einstein spacetimes with negative cosmological constant. In the limiting process …

Dynamics of Carrollian scalar fields

L Ciambelli - Classical and Quantum Gravity, 2024 - iopscience.iop.org
Adopting an intrinsic Carrollian viewpoint, we show that the generic Carrollian scalar field
action is a combination of electric and magnetic actions, found in the literature by taking the …

Strings near black holes are Carrollian

A Bagchi, A Banerjee, J Hartong, E Have, KS Kolekar… - Physical Review D, 2024 - APS
We demonstrate that strings near the horizon of a Schwarzschild black hole, when viewed
by a stationary observer at infinity, probe a string Carroll geometry, where the effective light …

Strings near black holes are Carrollian. Part II

A Bagchi, A Banerjee, J Hartong, E Have… - Journal of High Energy …, 2024 - Springer
A bstract We study classical closed bosonic strings probing the near-horizon region of a non-
extremal black hole and show that this corresponds to understanding string theory in the …

Heavy-ion collisions, Gubser flow, and Carroll hydrodynamics

A Bagchi, KS Kolekar, T Mandal, A Shukla - Physical Review D, 2024 - APS
Gubser flow provides an analytic model for describing the spacetime dynamics of the quark-
gluon plasma produced in heavy-ion collisions. Along with boost and rotation invariance …

Fracton infrared triangle

A Pérez, S Prohazka, A Seraj - Physical Review Letters, 2024 - APS
In theories with conserved dipole moment, isolated charged particles (fractons) are
immobile, but dipoles can move. We couple these dipoles to the fracton gauge theory and …

Quantization of Carrollian conformal scalar theories

B Chen, H Sun, Y Zheng - Physical Review D, 2024 - APS
In this work, we study the quantization of Carrollian conformal scalar theories, including two-
dimensional (2D) magnetic scalar and three-dimensional (3D) electric and magnetic scalars …

Carrollian supersymmetry and SYK-like models

O Kasikci, M Ozkan, Y Pang, U Zorba - Physical Review D, 2024 - APS
This work challenges the conventional notion that in a spacetime dimension higher than
one, a supersymmetric Lagrangian invariably consists of purely bosonic terms, purely …

Massive carrollian fields at timelike infinity

E Have, K Nguyen, S Prohazka, J Salzer - arxiv preprint arxiv:2402.05190, 2024 - arxiv.org
Motivated by flat space holography, we demonstrate that massive spin-$ s $ fields in
Minkowski space near timelike infinity are massive carrollian fields on the carrollian …