Lessons from the information paradox

S Raju - Physics Reports, 2022 - Elsevier
We review recent progress on the information paradox. We explain why exponentially small
correlations in the radiation emitted by a black hole are sufficient to resolve the original …

Carrollian perspective on celestial holography

L Donnay, A Fiorucci, Y Herfray, R Ruzziconi - Physical Review Letters, 2022 - APS
We show that a 3D sourced conformal Carrollian field theory has the right kinematic
properties to holographically describe gravity in 4D asymptotically flat spacetime. The …

Scattering amplitudes: celestial and Carrollian

A Bagchi, S Banerjee, R Basu, S Dutta - Physical Review Letters, 2022 - APS
Recent attempts at the construction of holography for asymptotically flat spacetime have
taken two different routes. Celestial holography, involving a two dimensional (2D) conformal …

Quantum information scrambling: from holography to quantum simulators

A Bhattacharyya, LK Joshi, B Sundar - The European Physical Journal C, 2022 - Springer
In this review, we present the ongoing developments in bridging the gap between
holography and experiments. To this end, we discuss information scrambling and models of …

A non-lorentzian primer

EA Bergshoeff, J Figueroa-O'Farrill… - SciPost Physics Lecture …, 2023 - scipost.org
We review both the kinematics and dynamics of non-lorentzian theories and their associated
geometries. First, we introduce non-lorentzian kinematical spacetimes and their symmetry …

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 …

The holographic nature of null infinity

A Laddha, S Prabhu, S Raju, P Shrivastava - SciPost Physics, 2021 - scipost.org
We argue that, in a theory of quantum gravity in a four dimensional asymptotically flat
spacetime, all information about massless excitations can be obtained from an infinitesimal …

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 …

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 …