Omer Albayrak | Searcharxiv

arXiv2026

Production of global vortices with quantum mediation

We study global vortex production in (numerical) scattering experiments when the scatterer and the vortex degrees of freedom interact only due to intermediary quantum variables. We work in $2+1$ dimensions with a complex scalar field, $ϕ$, that supports global vortices, a real scalar field, $ψ$, that is the scatterer, and a quantum field, $ρ$, that couples to both $ϕ$ and $ψ$, acting as a mediator. We simulate the scattering of relativistic Gaussian wavepackets of $ψ$ and scan parameter space for regions where vortex-antivortex pairs are produced. The results show that vortex production is highly sensitive to the initial Gaussian parameters, and the parameter space is chaotic with ``holes" and isolated regions of vortex production.

hep-ph↗

arXiv2024

Creating kinks with quantum mediation

We consider the creation of kink-antikink pairs of a scalar field $ϕ$ by the scattering of classical wavepackets of a second scalar field, $ψ$, when there are no direct interactions between $ϕ$ and $ψ$. The creation becomes possible only due to a quantum field that interacts with both $ϕ$ and $ψ$. We scan parameter space and find it favorable for kink production when the initial wavepackets have large total energy and wide spatial extent but scatter at low velocities.

hep-ph↗