1.4k citations · 6.8k across the 23 of their papers we have counts for
24 papers
Quantum gravity on the bulk cone
Ahmed Almheiri, Matthew Dodelson, Zohar Komargodski
Bulk-cone singularities in holographic correlators encode propagation along bulk null geodesics. The prototypical example is an AdS black hole, where incoming null geodesics can wi…
Continuing past the inner horizon using WKB
Shadi Ali Ahmad, Ahmed Almheiri, Simon Lin
Features of the black hole interior can be extracted from the analytic structure of boundary correlation functions. Working in the geodesic approximation, we find analytic continua…
Measurements probabilities in the final state proposal
Ahmed Almheiri
Bousso and Stanford (BS) argued that the black hole final state proposal leads to acausal effects and ill-defined probabilities for the AMPS experiment. We identify a loophole in t…
and the black hole interior
Shadi Ali Ahmad, Ahmed Almheiri, Simon Lin
There is ample evidence that the bulk dual of a deformed holographic CFT is a gravitational system with a finite area cutoff boundary. For states dual to black hole…
Quantum gravity of the Heisenberg algebra
Ahmed Almheiri, Akash Goel, Xu-Yao Hu
We consider a simplified model of double scaled SYK (DSSYK) in which the Hamiltonian is the position operator of the Harmonic oscillator. This model captures the high temperature l…
Holography on the Quantum Disk
Ahmed Almheiri, Fedor K. Popov
Motivated by recent study of DSSYK and the non-commutative nature of its bulk dual, we review and analyze an example of a non-commutative spacetime known as the quantum disk propos…
The Entanglement Wedge of Unknown Couplings
Ahmed Almheiri, Henry W. Lin
The black hole interior is a mysterious region of spacetime where non-perturbative effects are sometimes important. These non-perturbative effects are believed to be highly theory-…
The entropy of Hawking radiation
Ahmed Almheiri, Thomas Hartman, Juan Maldacena +2
In this review, we describe recent progress on the black hole information problem that involves a new understanding of how to calculate the entropy of Hawking radiation. We show ho…
Universal Constraints on Energy Flow and SYK Thermalization
Ahmed Almheiri, Alexey Milekhin, Brian Swingle
We study the dynamics of a quantum system in thermal equilibrium that is suddenly coupled to a bath at a different temperature, a situation inspired by a particular black hole evap…
Replica Wormholes and the Entropy of Hawking Radiation
Ahmed Almheiri, Thomas Hartman, Juan Maldacena +2
The information paradox can be realized in anti-de Sitter spacetime joined to a Minkowski region. In this setting, we show that the large discrepancy between the von Neumann entrop…
Entanglement islands in higher dimensions
Ahmed Almheiri, Raghu Mahajan, Jorge E. Santos
It has been suggested in recent work that the Page curve of Hawking radiation can be recovered using computations in semi-classical gravity provided one allows for "islands" in the…
Islands outside the horizon
Ahmed Almheiri, Raghu Mahajan, Juan Maldacena
We consider an AdS 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)-dimensional…
The Page curve of Hawking radiation from semiclassical geometry
Ahmed Almheiri, Raghu Mahajan, Juan Maldacena +1
We consider a gravity theory coupled to matter, where the matter has a higher-dimensional holographic dual. In such a theory, finding quantum extremal surfaces becomes equivalent t…
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…
Escaping the Interiors of Pure Boundary-State Black Holes
Ahmed Almheiri, Alexandros Mousatov, Milind Shyani
We consider a class of pure black hole microstates and demonstrate that they can be made escapable by turning on certain double trace deformations in the CFT. These microstates are…
Inside Out: Meet The Operators Inside The Horizon
Ahmed Almheiri, Tarek Anous, Aitor Lewkowycz
Based on the work of Heemskerk, Marolf, Polchinski and Sully (HMPS), we study the reconstruction of operators behind causal horizons in time dependent geometries obtained by acting…
Linearity of Holographic Entanglement Entropy
Ahmed Almheiri, Xi Dong, Brian Swingle
We consider the question of whether the leading contribution to the entanglement entropy in holographic CFTs is truly given by the expectation value of a linear operator as is sugg…
Conformal Symmetry Breaking and Thermodynamics of Near-Extremal Black Holes
Ahmed Almheiri, Byungwoo Kang
It has been argued recently by Almheiri and Polchinski that the near-horizon conformal symmetry of extremal black holes must be broken due to gravitational backreaction at an IR sc…
Bulk Locality and Quantum Error Correction in AdS/CFT
Ahmed Almheiri, Xi Dong, Daniel Harlow
We point out a connection between the emergence of bulk locality in AdS/CFT and the theory of quantum error correction. Bulk notions such as Bogoliubov transformations, location in…
Models of AdS_2 Backreaction and Holography
Ahmed Almheiri, Joseph Polchinski
We develop models of 1+1 dimensional dilaton gravity describing flows to from higher dimensional and other spaces. We use these to study the effects of backreaction o…
An Uneventful Horizon in Two Dimensions
Ahmed Almheiri, James Sully
We investigate the possibility of firewalls in the Einstein-dilaton gravity model of CGHS. We use the results of the numerical simulation carried out by Ashtekar et al. to demonstr…
An Apologia for Firewalls
Ahmed Almheiri, Donald Marolf, Joseph Polchinski +2
We address proposed alternatives to the black hole firewall. We show that embedding the interior Hilbert space of an old black hole into the Hilbert space of the early radiation is…
Black Holes: Complementarity or Firewalls?
Ahmed Almheiri, Donald Marolf, Joseph Polchinski +1
We argue that the following three statements cannot all be true: (i) Hawking radiation is in a pure state, (ii) the information carried by the radiation is emitted from the region…
Magnetic AdS2 x R2 at Weak and Strong Coupling
Ahmed Almheiri
We investigate an AdS2 magnetic brane solution within an abelian truncation of gauged supergravity in AdS4 x orbifolded S7. The solutions flow from AdS4 -> AdS2 x R2 with a magneti…