Coreless Vortices in Rotating Two-Component Quantum Droplets

TL;DR

This paper investigates the formation of coreless vortices in rotating two-component quantum droplets, showing their similarity across bosonic and fermionic systems and linking them to quantum Hall states.

Contribution

It demonstrates that coreless vortices form similarly in bosonic and fermionic systems regardless of interaction type, and connects these phenomena to Halperin wave functions.

Findings

Coreless vortices form similarly in bosons and fermions.

Formation is largely independent of interaction details.

Connection established with Halperin wave functions.

Abstract

The rotation of a quantum liquid induces vortices to carry angular momentum. When the system is composed of multiple components that are distinguishable from each other, vortex cores in one component may be filled by particles of the other component, and coreless vortices form. Based on evidence from computational methods, here we show that the formation of coreless vortices occurs very similarly for repulsively interacting bosons and fermions, largely independent of the form of the particle interactions. We further address the connection to the Halperin wave functions of non-polarized quantum Hall states.