Patrick, S., Geelmuyden, A., Erne, S., Barenghi, C. F., & Weinfurtner, S. (2022). Origin and evolution of the multiply quantized vortex instability. Physical Review Research (PRResearch), 4(4), Article 043104. https://doi.org/10.1103/PhysRevResearch.4.043104
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
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Journal:
Physical Review Research (PRResearch)
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Date (published):
8-Jun-2022
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Number of Pages:
8
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Publisher:
American Physical Society
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Peer reviewed:
Yes
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Keywords:
black hole; flow instabillity; vortex flows; superfluids
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Abstract:
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.
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Project title:
Analog Quantum Simulators: ESQ Discovery Schmiedmayer Huber (Österr. Akademie der Wissenschaften) Marie Sklodowska-Curie Cofunding of the fellow ship programme of the ESQ (Erwin Schrödinger Quantum Science Programme at the ÖAW: 801110 — ESQ (Österr. Akademie der Wissenschaften)
