Hawking radiation in a two-component Bose-Einstein condensate

Abstract

We consider a simple realization of an event horizon in the flow of a one-dimensional two-component Bose-Einstein condensate. Such a condensate has two types of quasiparticles; In the system we study, one corresponds to density fluctuations and the other to polarization fluctuations. We treat the case where a horizon occurs only for one type of quasiparticles (the polarization ones). We study the one- and two-body signal associated to the analog of spontaneous Hawking radiation and demonstrate by explicit computation that it consists only in the emission of polarization waves. We discuss the experimental consequences of the present results in the domain of atomic Bose-Einstein condensates and also for the physics of exciton-polaritons in semiconductor microcavities.

References in corpus (12)

• Quantum fluids of light
• Fiber-optical analogue of the event horizon
• Measurement of stimulated Hawking emission in an analogue system
• Hawking radiation from ultrashort laser pulse filaments
• Numerical observation of Hawking radiation from acoustic black holes in atomic Bose-Einstein condensates
• Observation of negative-frequency waves in a water tank: A classical analogue to the Hawking effect?
• Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes
• Analogue Hawking Radiation in a dc-SQUID Array Transmission Line
• The theory of Hawking radiation in laboratory analogues
• Imaging of spinor gases
• Note on Hawking-Unruh effects in graphene
• Polarization hydrodynamics in a one-dimensional polariton condensate

Cited by in corpus (6)

• An acoustic black hole in a stationary hydrodynamic flow of microcavity polaritons
• Equation of state and self-bound droplet in Rabi-coupled Bose mixtures
• Collective modes across the soliton-droplet crossover in binary Bose mixtures
• Black-hole lasing in coherently coupled two-component atomic condensates
• Polarization hydrodynamics in a one-dimensional polariton condensate
• Analogous Hawking radiation and quantum entanglement in two-component Bose-Einstein condensates: the gapped excitations