150 citations · 505 across the 18 of their papers we have counts for
19 papers
Breakdown of quantum mechanics in gravitational holography
Abram Akal
According to the holographic principle, the information content assigned to a gravitational region is processed by its lower dimensional boundary. As an example setup compatible wi…
Zoo of holographic moving mirrors
Ibrahim Akal, Taishi Kawamoto, Shan-Ming Ruan +2
We systematically study moving mirror models in two-dimensional conformal field theory (CFT). By focusing on their late-time behavior, we separate the mirror profiles into four cla…
On the Page curve under final state projection
Ibrahim Akal, Taishi Kawamoto, Shan-Ming Ruan +2
The black hole singularity plays a crucial role in formulating Hawking's information paradox. The global spacetime analysis may be reconciled with unitarity by imposing a final sta…
Information storage and near horizon quantum correlations
Abram Akal
It is usually stated that the information storing region associated with the Bekenstein-Hawking entropy is enclosed by a sphere of diameter equal twice the Schwarzschild radius. We…
Holographic moving mirrors
Ibrahim Akal, Yuya Kusuki, Noburo Shiba +2
Moving mirrors have been known as tractable setups modeling Hawking radiation from black holes. In this paper, motivated by recent developments regarding the black hole information…
Entanglement entropy in holographic moving mirror and Page curve
Ibrahim Akal, Yuya Kusuki, Noburo Shiba +2
We calculate the time evolution of entanglement entropy in two dimensional conformal field theory with a moving mirror. For a setup modeling Hawking radiation, we obtain a linear g…
Universality, intertwiners and black hole information
Abram Akal
The central question in this article is how information does leak out from black holes. Relying on algebraic arguments and the concept of superselection sectors, we propose the exi…
Codimension two holography for wedges
Ibrahim Akal, Yuya Kusuki, Tadashi Takayanagi +1
We propose a codimension two holography between a gravitational theory on a dimensional wedge spacetime and a dimensional CFT which lives on the corner of the wedge. Fo…
Reflections on Virasoro circuit complexity and Berry phase
Ibrahim Akal
Recently, the notion of circuit complexity defined in symmetry group manifolds has been related to geometric actions which generally arise in the coadjoint orbit method in represen…
Weighting gates in circuit complexity and holography
Ibrahim Akal
Motivated by recent studies of quantum computational complexity in quantum field theory and holography, we discuss how weighting certain classes of gates building up a quantum circ…
Simulating dynamically assisted production of Dirac pairs in gapped graphene monolayers
Ibrahim Akal, Reinhold Egger, Carsten Müller +1
In a vicinity of the Fermi surface, graphene layers with bandgaps allow for closely simulating the vacuum of quantum electrodynamics and, thus, its yet unverified strong-field phen…
Entanglement entropy on finitely ramified graphs
Ibrahim Akal
We compute the entanglement entropy in a composite system separated by a finitely ramified boundary with the structure of a self-similar lattice graph. We derive the entropy as a f…
Exact instantons via worldline deformations
Abram Akal
The imaginary part of the one loop effective action in external backgrounds can be efficiently computed using worldline instantons which are closed periodic paths in spacetime. Exa…
Super Gaussian enhancers in the Schwinger mechanism
Ibrahim Akal
We study the Schwinger mechanism in the presence of an additional uniformly oriented, weak super Gaussian of integer order . Using the worldline approach, we determine the re…
Quantum tunnelling from vacuum in multidimensions
Ibrahim Akal, Gudrid Moortgat-Pick
The tunnelling of virtual matter-antimatter pairs from the quantum vacuum in multidimensions is studied. We consider electric backgrounds as a linear combination of a spatial Saute…
Euclidean mirrors: enhanced vacuum decay from reflected instantons
Ibrahim Akal, Gudrid Moortgat-Pick
We study the tunneling of virtual matter-antimatter pairs from the quantum vacuum in the presence of a spatially uniform, time-dependent electric background composed of a strong, s…
Nonlinear lepton-photon interactions in external background fields
Ibrahim Akal, Gudrid Moortgat-Pick
Nonlinear phenomena of lepton-photon interactions in external backgrounds with a generalised periodic plane-wave geometry are studied. We discuss nonlinear Compton scattering in he…
Low-dimensional approach to pair production in an oscillating electric field: Application to bandgap graphene layers
Ibrahim Akal, Reinhold Egger, Carsten Müller +1
The production of particle-antiparticle pairs from the quantum field theoretic ground state in the presence of an external electric field is studied. Starting with the quantum kine…
Electron-positron pair production in a bifrequent oscillating electric field
Ibrahim Akal, Selym Villalba-Chávez, Carsten Müller
Production of electron-positron pairs from the quantum vacuum polarized by the superposition of a strong and a perturbative oscillating electric-field mode is studied. Our outcomes…