8 citations · 23 across the 12 of their papers we have counts for
6 papers · 1 filter
Topological Integer-Winding Dark Matter with a Dark Higgs Triplet: Stability from
Ahmed Ali
We propose a dark matter model in which the symmetry-breaking pattern SU(3)_dark -> SO(3)_dark x Z_2 produces absolutely stable point-like topological defects classified by pi_2(SU…
Rainbow McVittie Horizons in an Expanding Universe
Amani Ashour, Ahmed Farag Ali
We derive the Friedmann dynamics and apparent-horizon thermodynamics of a spatially flat McVittie spacetime in Gravity's Rainbow and construct a consistent non-accreting perfect-fl…
Spectral Admissibility of Real Observers in Euclidean de Sitter Gravity
Ricardo Espíndola, Ahmed Farag Ali
The Euclidean de Sitter path integral contains the familiar phase associated with conformal negative modes. Maldacena's construction shows that a suitably included real observer ca…
When do real observers resolve de Sitter's imaginary problem?
Ahmed Farag Ali
The universal phase $\rev{\ii}^{D+2}$ of the Euclidean de Sitter path integral obstructs a straightforward state-counting interpretation of the Gibbons--Hawking entropy. Building o…
Mass Without Mass from a Berry--Shifted SU(3) Holonomy Rotor
Ahmed Farag Ali
We identify a local, gauge-invariant mechanism that generates a finite spectral scale in pure SU(3) Yang--Mills theory on a punctured three-ball. Fixing a center sec…
Relational de Sitter State Counting with an SU(3) Clock
Ahmed Farag Ali
Motivated by Maldacena's observer-centric formulation of de~Sitter physics \cite{Maldacena:2024spf}, we develop an observer-dependent state-counting framework in Euclidean de~Sitte…