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 …

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 …

Emergent times in holographic duality

S Leutheusser, H Liu - Physical Review D, 2023 - APS
In holographic duality an eternal Anti-de Sitter black hole is described by two copies of the
boundary Conformal Field Theory in the thermal field double state. In this paper we provide …

Comments on the double cone wormhole

Y Chen, V Ivo, J Maldacena - Journal of High Energy Physics, 2024 - Springer
A bstract In this paper we revisit the double cone wormhole introduced by Saad, Shenker
and Stanford (SSS), which was shown to reproduce the ramp in the spectral form factor. As a …

Crossed product algebras and generalized entropy for subregions

S Ali Ahmad, R Jefferson - SciPost Physics Core, 2024 - scipost.org
An early result of algebraic quantum field theory is that the algebra of any subregion in a
QFT is a von Neumann factor of type III $ _ {1} $, in which entropy cannot be well-defined …

Failure of the split property in gravity and the information paradox

S Raju - Classical and Quantum Gravity, 2022 - iopscience.iop.org
In an ordinary quantum field theory, the'split property'implies that the state of the system can
be specified independently on a bounded subregion of a Cauchy slice and its complement …

Recovering the QNEC from the ANEC

F Ceyhan, T Faulkner - Communications in Mathematical Physics, 2020 - Springer
We study the relative entropy in QFT comparing the vacuum state to a special family of
purifications determined by an input state and constructed using relative modular flow. We …

Physics of the Inverted Harmonic Oscillator: From the lowest Landau level to event horizons

V Subramanyan, SS Hegde, S Vishveshwara… - Annals of Physics, 2021 - Elsevier
In this work, we present the inverted harmonic oscillator (IHO) Hamiltonian as a paradigm to
understand the quantum mechanics of scattering and time-decay in a diverse set of physical …

The centaur-algebra of observables

SE Aguilar-Gutierrez, E Bahiru, R Espíndola - Journal of High Energy …, 2024 - Springer
A bstract This letter explores a transition in the type of von Neumann algebra for
asymptotically AdS spacetimes from the implementations of the different gravitational …

Symmetry-resolved modular correlation functions in free fermionic theories

G Di Giulio, J Erdmenger - Journal of High Energy Physics, 2023 - Springer
A bstract As a new ingredient for analyzing the fine structure of entanglement, we study the
symmetry resolution of the modular flow of U (1)-invariant operators in theories endowed …