Departing from Thermality of Analogue Hawking Radiation in a Bose-Einstein Condensate
Mathieu Isoard, Nicolas Pavloff
Abstract
We study the quantum fluctuations in a one-dimensional Bose-Einstein condensate realizing an analogous acoustic black hole. The taking into account of evanescent channels and of zero modes makes it possible to accurately reproduce recent experimental measurements of the density correlation function. We discuss the determination of Hawking temperature and show that in our model the analogous radiation presents some significant departure from thermality.
Topics & Concepts
PhysicsHawking radiationBose–Einstein condensateHawkingRadiationQuantum electrodynamicsZero temperatureBlack hole (networking)Quantum mechanicsEinsteinCorrelation function (quantum field theory)Micro black holeSonic black holeQuantumGravitational waveEntropy (arrow of time)Computer networkComputer scienceDielectricLink-state routing protocolRouting protocolRouting (electronic design automation)Quantum Electrodynamics and Casimir EffectCosmology and Gravitation TheoriesThermal Radiation and Cooling Technologies