# Numerical observation of Hawking radiation from acoustic black holes in atomic Bose–Einstein condensates

@article{Carusotto2008NumericalOO, title={Numerical observation of Hawking radiation from acoustic black holes in atomic Bose–Einstein condensates}, author={Iacopo Carusotto and Serena Fagnocchi and Alessio Recati and Roberto Balbinot and Alessandro Fabbri}, journal={New Journal of Physics}, year={2008}, volume={10}, pages={103001} }

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…

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## References

SHOWING 1-10 OF 89 REFERENCES

### Nonlocal density correlations as a signature of Hawking radiation from acoustic black holes

- Physics
- 2008

We have used the analogy between gravitational systems and nonhomogeneous fluid flows to calculate the density-density correlation function of an atomic Bose-Einstein condensate in the presence of an…

### Hawking radiation in sonic black holes.

- PhysicsPhysical review letters
- 2005

The quantum treatment of the noninteracting case establishes a close relationship between sonic Hawking radiation and quantum tunneling through the barrier, and the possibility for experimental verification of this new transport phenomenon for ultracold atoms is discussed.

### Gibbons-Hawking effect in the sonic de Sitter space-time of an expanding Bose-Einstein-condensed gas.

- PhysicsPhysical review letters
- 2003

It is shown that a two-level system created at the center of the trap, an atomic quantum dot interacting with phonons, observes a thermal Bose distribution at the de Sitter temperature.

### Towards the Observation of Hawking Radiation in Bose–Einstein Condensates

- Physics
- 2001

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…

### Phonon background versus analog Hawking radiation in Bose-Einstein condensates

- Physics
- 2008

We determine the feasibility of detecting analogue Hawking radiation in a Bose-Einstein condensate in the presence of atom loss induced heating. We find that phonons created by three-body losses…

### Sonic analog of gravitational black holes in bose-einstein condensates

- PhysicsPhysical review letters
- 2000

It is shown that, in dilute-gas Bose-Einstein condensates, there exist both dynamically stable and unstable configurations which, in the hydrodynamic limit, exhibit a behavior resembling that of…

### On the origin of the particles in black hole evaporation

- Physics
- 2008

We present an analytic derivation of Hawking radiation for an arbitrary (spatial) dispersion relation $\omega(k)$ as a model for ultra-high energy deviations from general covariance. It turns out…

### Quantum De Laval Nozzle: Stability And Quantum Dynamics Of Sonic Horizons In A Toroidally Trapped Bose Gas Containing A superflow.

- Physics
- 2007

We study an experimentally realizable system containing stable black hole–white hole acoustic horizons in toroidally trapped Bose-Einstein condensates—the quantum de Laval nozzle. We numerically…

### DYNAMICAL QUANTUM NOISE IN TRAPPED BOSE-EINSTEIN CONDENSATES

- Physics
- 1998

We introduce the study of dynamical quantum noise in Bose-Einstein condensates through numerical simulation of stochastic partial differential equations obtained using phase-space representations. We…

### Analog model of a Friedmann-Robertson-Walker universe in Bose-Einstein condensates: Application of the classical field method

- Physics
- 2007

Analog models of gravity have been motivated by the possibility of investigating phenomena not readily accessible in their cosmological counterparts. In this paper, we investigate the analog of…