843 citations · 3k across the 39 of their papers we have counts for
38 papers · 1 filter
Twice Upon a Time: Timelike-Separated Quantum Extremal Surfaces
Netta Engelhardt, Geoff Penington, Arvin Shahbazi-Moghaddam
The Python's Lunch conjecture for the complexity of bulk reconstruction involves two types of nonminimal quantum extremal surfaces (QESs): bulges and throats, which differ by their…
The Complexity of Learning (Pseudo)random Dynamics of Black Holes and Other Chaotic Systems
Lisa Yang, Netta Engelhardt
It has been recently proposed that the naive semiclassical prediction of non-unitary black hole evaporation can be understood in the fundamental description of the black hole as a…
TF1 Snowmass Report: Quantum gravity, string theory, and black holes
Daniel Harlow, Shamit Kachru, Juan Maldacena +35
We give an overview of the field of quantum gravity, string theory and black holes summarizing various white papers in this subject that were submitted as part of the Snowmass proc…
A Tale of Two Saddles
Venkatesa Chandrasekaran, Netta Engelhardt, Sebastian Fischetti +1
We find a new on-shell replica wormhole in a computation of the generating functional of JT gravity coupled to matter. We show that this saddle has lower action than the disconnect…
The black hole interior from non-isometric codes and complexity
Chris Akers, Netta Engelhardt, Daniel Harlow +2
Quantum error correction has given us a natural language for the emergence of spacetime, but the black hole interior poses a challenge for this framework: at late times the apparen…
Snowmass White Paper: Quantum Aspects of Black Holes and the Emergence of Spacetime
Raphael Bousso, Xi Dong, Netta Engelhardt +4
Black holes provide a window into the microscopic structure of spacetime in quantum gravity. Recently the quantum information contained in Hawking radiation has been calculated, ve…
Canonical Purification of Evaporating Black Holes
Netta Engelhardt, Åsmund Folkestad
We show that the canonical purification of an evaporating black hole after the Page time consists of a short, connected, Lorentzian wormhole between two asymptotic boundaries, one…
Negative Complexity of Formation: the Compact Dimensions Strike Back
Netta Engelhardt, Åsmund Folkestad
We show that the vacuum-subtracted maximal volume, the proposed holographic dual to complexity of formation, can be negative when contributions from compact directions are included…
General Bounds on Holographic Complexity
Netta Engelhardt, Åsmund Folkestad
We prove a positive volume theorem for asymptotically AdS spacetimes: the maximal volume slice has nonnegative vacuum-subtracted volume, and the vacuum-subtracted volume vanishes i…
Finding Pythons in Unexpected Places
Netta Engelhardt, Geoff Penington, Arvin Shahbazi-Moghaddam
We argue that novel (highly nonclassical) quantum extremal surfaces play a crucial role in reconstructing the black hole interior even for isolated, single-sided, non-evaporating b…
A World without Pythons would be so Simple
Netta Engelhardt, Geoff Penington, Arvin Shahbazi-Moghaddam
We show that bulk operators lying between the outermost extremal surface and the asymptotic boundary admit a simple boundary reconstruction in the classical limit. This is the conv…
Holography Abhors Visible Trapped Surfaces
Netta Engelhardt, Åsmund Folkestad
We prove that consistency of the holographic dictionary implies a hallmark prediction of the weak cosmic censorship conjecture: that in classical gravity, trapped surfaces lie behi…
Free Energy from Replica Wormholes
Netta Engelhardt, Sebastian Fischetti, Alexander Maloney
Euclidean wormholes -- geometries which connect disconnected boundaries -- present a challenge to a standard quantum mechanical interpretation of the theory. One potential resoluti…
Quantum Maximin Surfaces
Chris Akers, Netta Engelhardt, Geoff Penington +1
We formulate a quantum generalization of maximin surfaces and show that a quantum maximin surface is identical to the minimal quantum extremal surface, introduced in the EW prescri…
Simple holographic models of black hole evaporation
Chris Akers, Netta Engelhardt, Daniel Harlow
Several recent papers have shown a close relationship between entanglement wedge reconstruction and the unitarity of black hole evaporation in AdS/CFT. The analysis of these papers…
Surface Theory: the Classical, the Quantum, and the Holographic
Netta Engelhardt, Sebastian Fischetti
Motivated by the power of subregion/subregion duality for constraining the bulk geometry in gauge/gravity duality, we pursue a comprehensive and systematic approach to the behavior…
The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole
Ahmed Almheiri, Netta Engelhardt, Donald Marolf +1
Bulk quantum fields are often said to contribute to the generalized entropy only at . Nonetheless, in the context of evaporating black hol…
A Holographic Argument for the Penrose Inequality in AdS
Netta Engelhardt, Gary T. Horowitz
We give a holographic argument in favor of the AdS Penrose inequality, which conjectures a lower bound on the total mass in terms of the area of apparent horizons. This inequality…
Coarse Graining Holographic Black Holes
Netta Engelhardt, Aron C. Wall
We expand our recent work on the outer entropy, a holographic coarse-grained entropy defined by maximizing the boundary entropy while fixing the classical bulk data outside some su…
Losing the IR: a Holographic Framework for Area Theorems
Netta Engelhardt, Sebastian Fischetti
Gravitational area laws are expected to arise as a result of ignorance of "UV gravitational data". In AdS/CFT, the UV/IR correspondence suggests that this data is dual to infrared…
Decoding the Apparent Horizon: A Coarse-Grained Holographic Entropy
Netta Engelhardt, Aron C. Wall
When a black hole forms from collapse in a holographic theory, the information in the black hole interior remains encoded in the boundary. We prove that the area of the black hole'…
Locality from Quantum Gravity: All or Nothing
Netta Engelhardt, Sebastian Fischetti
In a full theory of quantum gravity, local physics is expected to be approximate rather than innate. It is therefore important to understand how approximate locality emerges in the…
Causal Density Matrices
Netta Engelhardt, Sebastian Fischetti
We define a new construct in quantum field theory - the causal density matrix - obtained from the singularity structure of correlators of local operators. This object provides a ne…
No Simple Dual to the Causal Holographic Information?
Netta Engelhardt, Aron C. Wall
In AdS/CFT, the fine grained entropy of a boundary region is dual to the area of an extremal surface X in the bulk. It has been proposed that the area of a certain 'causal surface'…