41 citations · 46 across the 7 of their papers we have counts for
8 papers
The Stringy Photon Sphere
Ahmed Sheta
The S matrix on an asymptotically-flat Schwarzschild black hole is studied as a function of position on . We derive the lightcone singularities that arise in the S mat…
Self-Dual Yang-Mills in AdS
Simon Heuveline, Romain Ruzziconi, Ahmed Sheta +1
Quantum Yang-Mills theory in Euclidean AdS with Neumann boundary conditions is studied as a function of the complex couplings $\frac{1}{g_\pm^2} \equiv \frac{1}{g^2}\mp \frac{i…
A Formal Framework for Critical-Mass Collapse in Online Multiplayer Games
Ahmed Sheta
Online multiplayer games are population-dependent systems whose playability depends on the continued presence of an active player base. We propose a formal framework for reasoning…
Soft Algebras in AdS from Light Ray Operators in CFT
Ahmed Sheta, Andrew Strominger, Adam Tropper +1
Flat Minkowski space (M) and AdS can both be conformally mapped to the Einstein cylinder. The maps may be judiciously chosen so that some null generators of the $\mathcal{I…
Data Augmentation via Latent Diffusion Models for Detecting Smell-Related Objects in Historical Artworks
Ahmed Sheta, Mathias Zinnen, Aline Sindel +2
Finding smell references in historic artworks is a challenging problem. Beyond artwork-specific challenges such as stylistic variations, their recognition demands exceptionally det…
pp-Waves and the Hidden Symmetries of Black Hole Quasinormal Modes
Daniel Kapec, Ahmed Sheta
There are two interesting classes of trapped null geodesics in any black hole spacetime: those that lie on the photon ring and those that generate the horizon. Recent work introduc…
Gravitational Wave Driven Inspirals of Binaries Connected by Cosmic Strings
Ahmed Sheta, Yuri Levin
We consider gravitational waves from a pair of monopoles or black holes that are moving non-relativistically and are connected by a cosmic string. Shortly after the binary's format…
Logarithmic Corrections to Kerr Thermodynamics
Daniel Kapec, Ahmed Sheta, Andrew Strominger +1
Recent work has shown that loop corrections from massless particles generate corrections to black hole entropy which dominate the thermodynamic…