Origin and evolution of the multiply quantized vortex instability
| Autor: | Sam Patrick, August Geelmuyden, Sebastian Erne, Carlo F. Barenghi, Silke Weinfurtner |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physical Review Research, Vol 4, Iss 4, p 043104 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2643-1564 05242479 |
| DOI: | 10.1103/PhysRevResearch.4.043104 |
| Popis: | We show that the dynamical instability of quantum vortices with more than a single unit of circulation results from a superradiant bound state inside the vortex core. We then reveal a striking behavior of the system in the nonlinear regime. Counter to the expectation that the instability should produce well-separated vortices, the system evolves into a bound state of corotating singularities orbiting within a few healing lengths of each other, undergoing modulations in separation. During these modulations, kinetic energy is traded back and forth between sound waves and vortical degrees of freedom. |
| Databáze: | Directory of Open Access Journals |
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