Understanding superradiant phenomena with synthetic vector potentials in atomic Bose-Einstein condensates
arXiv:2011.01736 · doi:10.1103/PhysRevA.103.043309
Abstract
We theoretically investigate superradiance effects in quantum field theories in curved space-times by proposing an analogue model based on Bose--Einstein condensates subject to a synthetic vector potential. The breaking of the irrotationality constraint of superfluids allows to study superradiance in simple planar geometries and obtain intuitive insight in the amplified scattering processes at ergosurfaces. When boundary conditions are modified allowing for reflections, dynamical instabilities are found, similar to the ones of ergoregions in rotating space-times. Their stabilization by horizons in black hole geometries is discussed. All these phenomena are reinterpreted through an exact mapping with the physics of one-dimensional relativistic charged scalar fields in electrostatic potentials. Our study provides a deeper understanding on the basic mechanisms of superradiance: by disentangling the different ingredients at play, it shines light on some misconceptions on the role of dissipation and horizons and on the competition between superradiant scattering and instabilities.
arXiv comment25 pages, 17 figures
References in corpus (45)
- Topological Photonics
- Quasinormal modes of black holes and black branes
- Quantum fluids of light
- Artificial gauge potentials for neutral atoms
- Synthetic magnetic fields for ultracold neutral atoms
- Analogue Gravity
- Topological Bands for Ultracold Atoms
- A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
- Light ring stability in ultra-compact objects
- Lorentz violation at high energy: concepts, phenomena and astrophysical constraints
- Light rings as observational evidence for event horizons: long-lived modes, ergoregions and nonlinear instabilities of ultracompact objects
- Superradiant Instability and Backreaction of Massive Vector Fields around Kerr Black Holes
- Numerical observation of Hawking radiation from acoustic black holes in atomic Bose-Einstein condensates
- Observation of superradiance in a vortex flow
- Raman processes and effective gauge potentials
- Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes
- An acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons
- Black hole lasers
- Quasinormal modes and classical wave propagation in analogue black holes
- Explosion and final state of an unstable Reissner-Nordstrom black hole
- Bogoliubov Theory of acoustic Hawking radiation in Bose-Einstein Condensates
- `Superresonance' from a rotating acoustic black hole
- Nonlinear Evolution and Final Fate of Charged Anti-de Sitter Black Hole Superradiant Instability
- Bose-Einstein condensates in atomic gases: simple theoretical results
- Analog Hawking radiation from an acoustic black hole in a flowing polariton superfluid
- Generalised superradiant scattering
- Rotating black holes in a draining bathtub: superradiant scattering of gravity waves
- Acoustic white holes in flowing atomic Bose-Einstein condensates
- Black Holes and Wormholes in spinor polariton condensates
- Detecting Rotational Superradiance in Fluid Laboratories
- Superradiance from BEC vortices: a numerical study
- Superradiance -- the 2020 Edition
- The Penrose process, superradiance and ergoregion instabilities
- Polariton fluids for analogue gravity physics
- Dynamical stability of a doubly quantized vortex in a three-dimensional condensate
- Ergoregion instabilities in rotating two-dimensional Bose--Einstein condensates: new perspectives on the stability of quantized vortices
- Ergoregion instability: The hydrodynamic vortex
- Non-linear effects in time-dependent transonic flows: An analysis of analogue black hole stability
- Saturation of black hole lasers in Bose-Einstein condensates
- Time-dependent study of a black-hole laser in a flowing atomic condensate
- Superradiant scattering of dispersive fields
- Superradiance in dispersive black hole analogues
- Rotational superradiance with Bogoliubov dispersion
- Bosonic pair creation and the Schiff-Snyder-Weinberg effect
- Long time universality of black-hole lasers
Cited by in corpus (7)
- Entanglement from superradiance and rotating quantum fluids of light
- Interplay of Kelvin-Helmholtz and superradiant instabilities of an array of quantized vortices in a two-dimensional Bose--Einstein condensate
- Cosmological particle production in a quantum field simulator as a quantum mechanical scattering problem
- Dissipative Quantum Vortices and Superradiant Scattering
- Superradiant phononic emission from the analog spin ergoregion in a two-component Bose-Einstein condensate
- Spontaneous quantum superradiant emission in atomic Bose-Einstein condensates subject to a synthetic vector potential
- Relevance of "on" and "off" transitions in quantum pair production experiments