Ergoregion instability of a rotating quantum system
arXiv:1807.07649 · doi:10.1103/PhysRevD.97.124063
Abstract
Using the analogy between acoustic perturbations in an ideal fluid and the description of a Klein-Gordon scalar field in a curved spacetime, we study the quasinormal modes of a quantum system: the rotating Bose-Einstein condensate. To compute quasinormal frequencies, we use two different numerical techniques, namely the direct integration and the continued-fraction methods. We study in detail the ergoregion instability of this linearly perturbed system, comparing the results with different setup configurations.
9 pages, 3 figures, 1 table
References in corpus (7)
- Observation of self-amplifying Hawking radiation in an analog black hole laser
- Ergoregion instability: The hydrodynamic vortex
- Acoustic clouds: standing sound waves around a black hole analogue
- Quasinormal modes and Regge poles of the canonical acoustic hole
- Quasi-normal mode analysis in BEC acoustic black holes
- Onset of superradiant instabilities in the hydrodynamic vortex model
- Quasinormal modes of the polytropic hydrodynamic vortex
Cited by in corpus (5)
- Ergoregion instabilities in rotating two-dimensional Bose--Einstein condensates: new perspectives on the stability of quantized vortices
- Dissipative Quantum Vortices and Superradiant Scattering
- Synchronized stationary clouds in a static fluid
- Superradiant phononic emission from the analog spin ergoregion in a two-component Bose-Einstein condensate
- Ergoregion instability in a fluid with vorticity