Numerical observation of Hawking radiation from acoustic black holes in atomic Bose-Einstein condensates
نویسندگان
چکیده
We report numerical evidence of Hawking emission of Bogoliubov phonons from a sonic horizon in a flowing one-dimensional atomic Bose-Einstein condensate. The presence of Hawking radiation is revealed from peculiar long-range patterns in the density-density correlation function of the gas. Quantitative agreement between our fully microscopic calculations and the prediction of analog models is obtained in the hydrodynamic limit. New features are predicted and the robustness of the Hawking signal against a finite temperature discussed. PACS numbers: 03.75.Kk, 04.62.+v, 04.70.Dy
منابع مشابه
Towards the Observation of Hawking Radiation in Bose Einstein Condensates
Acoustic analogues of black holes (dumb holes) are generated when a supersonic fluid flow entrains sound waves and forms a trapped region from which sound cannot escape. The surface of no return, the acoustic horizon, is qualitatively very similar to the event horizon of a general relativity black hole. In particular Hawking radiation (a thermal bath of phonons with temperature proportional to ...
متن کاملBogoliubov theory of the Hawking effect in Bose - Einstein condensates
Artificial black holes may demonstrate some of the elusive quantum properties of the event horizon, in particular Hawking radiation. One promising candidate is a sonic hole in a Bose-Einstein condensate. We clarify why Hawk-ing radiation emerges from the condensate and how this condensed-matter analog reflects some of the intriguing aspects of quantum black holes.
متن کاملObservation of self-amplifying Hawking radiation in an analog black hole laser
It has been proposed that a black hole horizon should generate Hawking radiation. In order to test this theory, we have created a narrow, low density, very low temperature atomic Bose-Einstein condensate, containing an analog black hole horizon and an inner horizon, as in a charged black hole. We observe Hawking radiation emitted by the black hole. This is the output of the black hole laser. We...
متن کاملZel’dovich-Starobinsky Effect in Atomic Bose-Einstein Condensates: Analogy to Kerr Black Hole
We consider circular motion of a heavy object in an atomic Bose-Einstein condensate (BEC) at T = 0K. Even if the linear velocity of the object is smaller than the Landau critical velocity, the object may radiate quasiparticles and thus experience the quantum friction. The radiation process is similar to Zel'dovich-Starobinskii (ZS) effect – the radiation by a rotating black hole. This analogy e...
متن کاملar X iv : g r - qc / 0 61 10 96 v 1 1 7 N ov 2 00 6 Analog Models beyond Kinematics February 7 , 2008
In this paper I discuss the extension of the analogy between gravitation and some systems of condensed matter physics from kinematics to dynamics. I will focus my attention on two applications of the analogy to the dynamics of fluids that have been recently proposed: the study of backreaction effects and the calculation of the depletion in Bose-Einstein condensates, showing how this extension i...
متن کامل