Is a doubly quantized vortex dynamically unstable in uniform superfluids?
arXiv:1710.10810 · doi:10.7566/JPSJ.87.023601
Abstract
We revisit the fundamental problem of the splitting instability of a doubly quantized vortex in uniform single-component superfluids at zero temperature. We analyze the system-size dependence of the excitation frequency of a doubly quantized vortex through large-scale simulations of the Bogoliubov--de Gennes equation, and find that the system remains dynamically unstable even in the infinite-system-size limit. Perturbation and semi-classical theories reveal that the splitting instability radiates a damped oscillatory phonon as an opposite counterpart of a quasi-normal mode.
8 pages, 6 figures
References in corpus (19)
- Quasi-Normal Modes of Stars and Black Holes
- Observation of superradiance in a vortex flow
- Dynamical Instability of a Doubly Quantized Vortex in a Bose-Einstein condensate
- Quantum hydrodynamics
- Coherent disintegration and stability of vortices in trapped Bose condensate
- Splitting Instability of a Multiply Charged Vortex in a Bose-Einstein Condensate
- Instabilities of vortices in a binary mixture of trapped Bose-Einstein condensates: Role of excitations with positive and negative energies
- Vortices and turbulence in trapped atomic condensates
- Splitting of a doubly quantized vortex through intertwining in Bose-Einstein condensates
- Rotational quantum friction in superfluids: Radiation from object rotating in superfluid vacuum
- Superradiance from BEC vortices: a numerical study
- Dynamically stable multiply quantized vortices in dilute Bose-Einstein condensates
- Superradiant scattering from a hydrodynamic vortex
- Dynamical stability of a doubly quantized vortex in a three-dimensional condensate
- Nambu-Goldstone Modes Propagating along Topological Defects: Kelvin and Ripple Modes from Small to Large Systems
- Nambu-Goldstone modes in segregated Bose-Einstein condensates
- Zel'dovich-Starobinsky Effect in Atomic Bose-Einstein Condensates: Analogy to Kerr Black Hole
- Dynamical instabilities and quasi-normal modes, a spectral analysis with applications to black-hole physics
- Condition for the Existence of Complex Modes in a Trapped Bose--Einstein Condensate with a Highly Quantized Vortex
Cited by in corpus (11)
- Ergoregion instabilities in rotating two-dimensional Bose--Einstein condensates: new perspectives on the stability of quantized vortices
- Splitting of doubly quantized vortices in holographic superfluid of finite temperature
- Spin-Current Instability at a Magnetic Domain Wall in a Ferromagnetic Superfluid: a Generation Mechanism of Eccentric Fractional Skyrmions
- Interplay of Kelvin-Helmholtz and superradiant instabilities of an array of quantized vortices in a two-dimensional Bose--Einstein condensate
- Phase diagram of vortices in the polar phase of spin-1 Bose-Einstein condensates
- Dynamics of two quantized vortices belonging to different components of binary Bose-Einstein condensates in a circular box potential
- Universal description of massive point vortices and verification methods of vortex inertia in superfluids
- Vortices and rotating solitons in ultralight dark matter
- 3D Vortices and rotating solitons in ultralight dark matter
- Kelvin wave in miscible two-component Bose-Einstein condensates
- Anomalous minimization for critical velocity of superflow along a step potential