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arXiv · 2610.36710

Intercomponent vortex interaction and dynamics in a uniform Bose quantum liquid

Rabeea Kiran·Hiroki Saito·Hsiang-Hua Jen
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Abstract

We investigate the interaction and dynamics of vortices belonging to different components of a binary uniform quantum liquid. Using the coupled extended Gross-Pitaevskii equations with logarithmic beyond-mean-field corrections, we derive the asymptotic interaction potential between well-separated vortices. The interaction potential retains the asymptotic form $s^{-2}$ as a function of the intervortex distance s, but its coefficient depends on the background density through the quantum fluctuation. As a result, the interaction between vortices changes from attractive to repulsive at a critical density. Real-time simulations demonstrate a corresponding reversal of orbital motion of a vortex pair from clockwise to counterclockwise, consistent with their Magnus response.

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Rabeea Kiran, Hiroki Saito, Hsiang-Hua Jen. 2026-10-27. Intercomponent vortex interaction and dynamics in a uniform Bose quantum liquid. https://arxiv.org/abs/2610.36710

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