Entanglement entropy: holography and renormalization group

T Nishioka - Reviews of Modern Physics, 2018 - APS
Entanglement entropy plays a variety of roles in quantum field theory, including the
connections between quantum states and gravitation through the holographic principle. This …

Energy conditions in general relativity and quantum field theory

EA Kontou, K Sanders - Classical and Quantum Gravity, 2020 - iopscience.iop.org
This review summarizes the current status of the energy conditions in general relativity and
quantum field theory. We provide a historical review and a summary of technical results and …

Islands outside the horizon

A Almheiri, R Mahajan, J Maldacena - arxiv preprint arxiv:1910.11077, 2019 - arxiv.org
We consider an AdS $ _2 $ black hole in equilibrium with a bath, which we take to have a
dual description as (0+ 1)-dimensional quantum mechanical system coupled to a (1+ 1) …

Generalized entropy for general subregions in quantum gravity

K Jensen, J Sorce, AJ Speranza - Journal of High Energy Physics, 2023 - Springer
A bstract We consider quantum algebras of observables associated with subregions in
theories of Einstein gravity coupled to matter in the GN→ 0 limit. When the subregion is …

Null Raychaudhuri: canonical structure and the dressing time

L Ciambelli, L Freidel, RG Leigh - Journal of High Energy Physics, 2024 - Springer
A bstract We initiate a study of gravity focusing on generic null hypersurfaces, non-
perturbatively in the Newton coupling. We present an off-shell account of the extended …

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 …

Quantum extremal islands made easy. Part III. Complexity on the brane

J Hernandez, RC Myers, SM Ruan - Journal of High Energy Physics, 2021 - Springer
A bstract We examine holographic complexity in the doubly holographic model introduced in
[1, 2] to study quantum extremal islands. We focus on the holographic complexity= volume …

Generalized black hole entropy is von Neumann entropy

J Kudler-Flam, S Leutheusser, G Satishchandran - Physical Review D, 2025 - APS
It has been argued that, while the individual terms in the generalized entropy, S gen= A/4
GN+ S ext, are ill-defined in the semiclassical limit, their sum is well-defined if one takes into …

Modular Hamiltonians for deformed half-spaces and the averaged null energy condition

T Faulkner, RG Leigh, O Parrikar, H Wang - Journal of High Energy …, 2016 - Springer
A bstract We study modular Hamiltonians corresponding to the vacuum state for deformed
half-spaces in relativistic quantum field theories on\({\mathrm {\mathbb {R}}}^{1, d-1}\). We …

Quantum focusing conjecture

R Bousso, Z Fisher, S Leichenauer, AC Wall - Physical Review D, 2016 - APS
We propose a universal inequality that unifies the Bousso bound with the classical focusing
theorem. Given a surface σ that need not lie on a horizon, we define a finite generalized …