843 citations · 4.9k across the 45 of their papers we have counts for
29 papers · 1 filter
Off-Shell Strings II: Black Hole Entropy
Amr Ahmadain, Aron C. Wall
In 1994, Susskind and Uglum argued that it is possible to derive the Bekenstein-Hawking entropy from string theory. In this article we explain the conceptual underpinnings…
Off-Shell Strings I: S-matrix and Action
Amr Ahmadain, Aron C. Wall
We explain why Tseytlin's off-shell formulation of string theory is well-defined. Although quantizing strings on an off-shell background requires an arbitrary choice of Weyl frame,…
Cauchy Slice Holography: A New AdS/CFT Dictionary
Goncalo Araujo-Regado, Rifath Khan, Aron C. Wall
We investigate a new approach to holography in asymptotically AdS spacetimes, in which time rather than space is the emergent dimension. By making a sufficiently large T^2-deformat…
Holographic Tensor Networks in Full AdS/CFT
Ning Bao, Geoffrey Penington, Jonathan Sorce +1
We present a general procedure for constructing tensor networks for geometric states in the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence. Given a state in a large…
Restricted Maximin surfaces and HRT in generic black hole spacetimes
Donald Marolf, Aron C. Wall, Zhencheng Wang
The AdS/CFT understanding of CFT entanglement is based on HRT surfaces in the dual bulk spacetime. While such surfaces need not exist in sufficiently general spacetimes, the maximi…
Beyond Toy Models: Distilling Tensor Networks in Full AdS/CFT
Ning Bao, Geoffrey Penington, Jonathan Sorce +1
We present a general procedure for constructing tensor networks that accurately reproduce holographic states in conformal field theories (CFTs). Given a state in a large- CFT wi…
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…
Asymptotic Charges Cannot Be Measured in Finite Time
Raphael Bousso, Venkatesa Chandrasekaran, Illan F. Halpern +1
To study quantum gravity in asymptotically flat spacetimes, one would like to understand the algebra of observables at null infinity. Here we show that the Bondi mass cannot be obs…
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'…
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'…
A Lower Bound on the Energy Density in Classical and Quantum Field Theories
Aron C. Wall
A novel method for deriving energy conditions in stable field theories is described. In a local classical theory with one spatial dimension, a local energy condition always exists.…
Electromagnetic Duality and Entanglement Anomalies
William Donnelly, Ben Michel, Aron Wall
Duality is an indispensable tool for describing the strong-coupling dynamics of gauge theories. However, its actual realization is often quite subtle: quantities such as the partit…
Traversable Wormholes via a Double Trace Deformation
Ping Gao, Daniel Louis Jafferis, Aron C. Wall
After turning on an interaction that couples the two boundaries of an eternal BTZ black hole, we find a quantum matter stress tensor with negative average null energy, whose gravit…
State-Dependent Divergences in the Entanglement Entropy
Donald Marolf, Aron C. Wall
We show the entanglement entropy in certain quantum field theories to contain state-dependent divergences. Both perturbative and holographic examples are exhibited. However, quanti…
Reconstruction of Bulk Operators within the Entanglement Wedge in Gauge-Gravity Duality
Xi Dong, Daniel Harlow, Aron C. Wall
In this Letter we prove a simple theorem in quantum information theory, which implies that bulk operators in the Anti-de Sitter / Conformal Field Theory (AdS/CFT) correspondence ca…
Proof of the Quantum Null Energy Condition
Raphael Bousso, Zachary Fisher, Jason Koeller +2
We prove the Quantum Null Energy Condition (QNEC), a lower bound on the stress tensor in terms of the second variation in a null direction of the entropy of a region. The QNEC aros…
Anomalies of the Entanglement Entropy in Chiral Theories
Nabil Iqbal, Aron C. Wall
We study entanglement entropy in theories with gravitational or mixed U(1) gauge-gravitational anomalies in two, four and six dimensions. In such theories there is an anomaly in th…
Geometric entropy and edge modes of the electromagnetic field
William Donnelly, Aron C. Wall
We calculate the vacuum entanglement entropy of Maxwell theory in a class of curved spacetimes by Kaluza-Klein reduction of the theory onto a two-dimensional base manifold. Using t…
Entanglement entropy of electromagnetic edge modes
William Donnelly, Aron C. Wall
The vacuum entanglement entropy of Maxwell theory, when evaluated by standard methods, contains an unexpected term with no known statistical interpretation. We resolve this two-dec…
A paucity of bulk entangling surfaces: AdS wormholes with de Sitter interiors
Sebastian Fischetti, Donald Marolf, Aron C. Wall
We study and construct spacetimes, dubbed planar AdS-dS-wormholes, satisfying the null energy condition and having two asymptotically AdS boundaries connected through a (non-traver…
Quantum Extremal Surfaces: Holographic Entanglement Entropy beyond the Classical Regime
Netta Engelhardt, Aron C. Wall
We propose that holographic entanglement entropy can be calculated at arbitrary orders in the bulk Planck constant using the concept of a "quantum extremal surface": a surface whic…
Extremal Surface Barriers
Netta Engelhardt, Aron C. Wall
We present a generic condition for Lorentzian manifolds to have a barrier that limits the reach of boundary-anchored extremal surfaces of arbitrary dimension. We show that any surf…
Coarse-grained entropy and causal holographic information in AdS/CFT
William R. Kelly, Aron C. Wall
We propose bulk duals for certain coarse-grained entropies of boundary regions. The `one-point entropy' is defined in the conformal field theory by maximizing the entropy in a doma…
Unitarity of Maxwell theory on curved spacetimes in the covariant formalism
William Donnelly, Aron C. Wall
Quantum field theory in curved spacetime may be defined either through a manifestly unitary canonical approach or via the manifestly covariant path integral formalism. For gauge th…