scholarly journals Soliton diffusion in a Bose-Einstein condensate: A signature of the analogue Hawking radiation

2019 ◽  
Vol 793 ◽  
pp. 390-395
Author(s):  
Chao Hang ◽  
Gregory Gabadadze ◽  
Guoxiang Huang
Keyword(s):  
Hawking Radiation ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Momentum correlations as signature of sonic Hawking radiation in Bose-Einstein condensates

2018 ◽  
Vol 4 (4) ◽  
Author(s):  
Alessandro Fabbri ◽  
Nicolas Pavloff
Keyword(s):  
Hawking Radiation ◽  
Momentum Space ◽  
Einstein Condensate ◽  
Measuring Process ◽  
One Dimensional ◽  
Bose Einstein Condensate ◽  
Momentum Correlation ◽  
Quantum Quenches ◽  
Effects Of Temperature ◽  
Bose Einstein

We study the two-body momentum correlation signal in a quasi one dimensional Bose-Einstein condensate in the presence of a sonic horizon. We identify the relevant correlation lines in momentum space and compute the intensity of the corresponding signal. We consider a set of different experimental procedures and identify the specific issues of each measuring process. We show that some inter-channel correlations, in particular the Hawking quantum-partner one, are particularly well adapted for witnessing quantum non-separability, being resilient to the effects of temperature and/or quantum quenches.

scholarly journals Back-Reaction in Canonical Analogue Black Holes

2020 ◽  
Vol 10 (24) ◽  
pp. 8868
Author(s):  
Stefano Liberati ◽  
Giovanni Tricella ◽  
Andrea Trombettoni
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Density Distribution ◽  
Hawking Radiation ◽  
Einstein Condensate ◽  
Back Reaction ◽  
Unitary Evolution ◽  
Black Hole Evaporation ◽  
Bose Einstein Condensate ◽  
Bose Einstein

We study the back-reaction associated with Hawking evaporation of an acoustic canonical analogue black hole in a Bose–Einstein condensate. We show that the emission of Hawking radiation induces a local back-reaction on the condensate, perturbing it in the near-horizon region, and a global back-reaction in the density distribution of the atoms. We discuss how these results produce useful insights into the process of black hole evaporation and its compatibility with a unitary evolution.

scholarly journals Mechanism of stimulated Hawking radiation in a laboratory Bose-Einstein condensate

2017 ◽  
Vol 96 (2) ◽  
Author(s):  
Yi-Hsieh Wang ◽  
Ted Jacobson ◽  
Mark Edwards ◽  
Charles W. Clark
Keyword(s):  
Hawking Radiation ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Towards the Observation of Hawking Radiation in Bose–Einstein Condensates

2003 ◽  
Vol 18 (21) ◽  
pp. 3735-3745 ◽  
Author(s):  
Carlos Barceló ◽  
Stefano Liberati ◽  
Matt Visser
Keyword(s):  
Hawking Radiation ◽  
Laval Nozzle ◽  
Einstein Condensate ◽  
Thermal Bath ◽  
Condensation Temperature ◽  
Sound Waves ◽  
Bose Einstein Condensate ◽  
Set Up ◽  
Bose Einstein ◽  
Near Future

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 the "surface gravity") is expected to occur. In this note we consider quasi-one-dimensional supersonic flow of a Bose–Einstein condensate (BEC) in a Laval nozzle (converging-diverging nozzle), with a view to finding which experimental settings could magnify this effect and provide an observable signal. We discuss constraints and problems for our model and identify the issues that should be addressed in the near future in order to set up an experiment. In particular we identify an experimentally plausible configuration with a Hawking temperature of order 70 n K; to be contrasted with a condensation temperature of the order of 90 n K.

scholarly journals Black-Hole evaporation and quantum-depletion in Bose–Einstein condensates

2020 ◽  
pp. 2150006
Author(s):  
Ivan Arraut
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Temperature Regime ◽  
Hawking Radiation ◽  
Einstein Condensate ◽  
Zero Temperature ◽  
Black Hole Evaporation ◽  
Bose Einstein Condensate ◽  
Bose Einstein ◽  
Bogoliubov Transformations

We study the analogy between the Hawking radiation in Black-Holes and the quantum depletion process of a Bose–Einstein condensate by using the Bogoliubov transformations method. We find that the relation between the Bogoliubov coefficients is similar in both cases (in the appropriate regimes). We then connect the condensate variables with those associated to the Black-Hole, demonstrating then that the zero temperature regime of the condensate is equivalent to the existence of an event horizon in gravity.

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