Resonance phenomena in vortex-antivortex collisions

TL;DR

This paper maps out the complex scattering behaviors between vortex-antivortex pairs in the deep type II regime, revealing chaotic patterns and resonance effects driven by quasinormal modes.

Contribution

It provides the first detailed map of vortex-antivortex collision outcomes, highlighting the role of Feshbach resonant modes in energy transfer and chaos.

Findings

Chaotic scattering patterns observed in deep type II regime

Bounce windows are embedded within annihilation regions

Resonance via Feshbach modes influences collision dynamics

Abstract

In this work, we provide a full map of scattering scenarios between a Nielsen-Olesen vortex and antivortex. Importantly, in the deep type II regime, such a collision reveals a chaotic pattern in the final state formation with bounce windows immersed into annihilation regions. This structure is due to the energy transfer mechanism triggered by a quasinormal mode, specifically the Feshbach resonant mode, hosted by the vortex.