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

被引：228

作者：

Carusotto, Iacopo ^{[1
,2
]}

Fagnocchi, Serena ^{[3
,4
,5
]}

Recati, Alessio ^{[1
,2
]}

Balbinot, Roberto ^{[4
,5
]}

Fabbri, Alessandro ^{[6
,7
]}

机构：

[1] Univ Trent, CNR, INFM, BEC Ctr, I-38050 Trento, Italy

[2] Univ Trent, Dipartmento Fis, I-38050 Trento, Italy

[3] Ctr Studi & Ric Enr Fermi, I-00184 Rome, Italy

[4] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

[5] INFN Sez Bologna, I-40126 Bologna, Italy

[6] Univ Valencia, CSIC, Dept Fis Teor, E-46100 Burjassot, Spain

[7] Univ Valencia, CSIC, IFIC, E-46100 Burjassot, Spain

来源：

NEW JOURNAL OF PHYSICS | 2008年 / 10卷

关键词：

D O I：

10.1088/1367-2630/10/10/103001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：15