collaborators

10 papers

hep-th2026

Scalar Finite-Proper-Time Field Theory as Spectral Operator Calculus

Mustafa Bakr, Tongyu Zhang

We formulate a finite-proper-time construction for Euclidean scalar theory in which a retained endpoint is assigned to complete internal histories rather than independ…

math-ph2026

Minimum Virtual Proper Time and Finite Mass--Charge Matching in QED

Mustafa Bakr

We formulate a finite-proper-time version of QED defined by a gauge-covariant generating functional in which every complete internal virtual history carries a physical lower endpoi…

physics.optics2025

The Zero-Frequency Limit of Spherical Cavity Modes: On the Formal Endpoint at v=1

Mustafa Bakr, Smain Amari

The transverse magnetic (TM) modes of a spherical cavity satisfy a dispersion relation connecting the angular eigenvalue to the resonant frequency through zeros of the spheric…

math-ph2025

Group-Theoretical Origin of the Sectoral-Tesseral-Zonal Trichotomy in Spherical Harmonics

Mustafa Bakr, Smain Amari

The spherical harmonics fall into three families -- sectoral (), tesseral (), and zonal () -- which exhibit fundamentally different be…

math-ph2025

Electromagnetic Modes in Spherical Cavities: Complete Theory of Angular Spectra, Dispersion Relations, and Self-Adjoint Extensions

Mustafa Bakr, Tongyu Zhang, Smain Amari

We present a complete theory of electromagnetic modes in spherical cavities, resolving fundamental questions about the nature of angular quantization. The standard result that angu…

quant-ph2025

Quantum Mechanics in a Spherical Wedge: Complete Solution and Implications for Angular Momentum Theory

Mustafa Bakr, Smain Amari

We solve the stationary Schrödinger equation for a particle confined to a 3D spherical wedge -- the region