Quantum vortices are often endowed with an effective inertial mass, due, for example, to massive particles in their cores. Such “massive vortices” display new phenomena beyond the standard picture of superfluid vortex dynamics, where mass is neglected. In this work, we demonstrate that massive vortices are allowed to collide, as opposed to their massless counterparts. We propose a scheme to generate controllable, repeatable, deterministic collisional events in pairs of quantum vortices. We demonstrate two mass-driven fundamental processes: (i) the annihilation of two counter-rotating vortices and (ii) the merging of two corotating vortices, thus pointing out new mechanisms supporting incompressible-to-compressible kinetic-energy conversion, as well as doubly quantized vortex stabilization in flat superfluids.

Mass-driven vortex collisions in flat superfluids / Richaud, Andrea; Lamporesi, Giacomo; Capone, Massimo; Recati, Alessio. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 107:5(2023), pp. 1-10. [10.1103/PhysRevA.107.053317]

Mass-driven vortex collisions in flat superfluids

Richaud, Andrea
;
Capone, Massimo;Recati, Alessio
2023-01-01

Abstract

Quantum vortices are often endowed with an effective inertial mass, due, for example, to massive particles in their cores. Such “massive vortices” display new phenomena beyond the standard picture of superfluid vortex dynamics, where mass is neglected. In this work, we demonstrate that massive vortices are allowed to collide, as opposed to their massless counterparts. We propose a scheme to generate controllable, repeatable, deterministic collisional events in pairs of quantum vortices. We demonstrate two mass-driven fundamental processes: (i) the annihilation of two counter-rotating vortices and (ii) the merging of two corotating vortices, thus pointing out new mechanisms supporting incompressible-to-compressible kinetic-energy conversion, as well as doubly quantized vortex stabilization in flat superfluids.
2023
107
5
1
10
053317
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.107.053317
Richaud, Andrea; Lamporesi, Giacomo; Capone, Massimo; Recati, Alessio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/132530
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