Quasinormal mode analysis in BEC acoustic black holes

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Barcelo, C. and Cano, A. and Garay Elizondo, Luis Javier and Jannes, G. (2007) Quasinormal mode analysis in BEC acoustic black holes. Physical review D, 75 (8). ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.75.084024

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Abstract

We perform a quasinormal mode analysis of black-hole configurations in Bose-Einstein condensates (BECs). In this analysis we use the full Bogoliubov dispersion relation, not just the hydrodynamic or geometric approximation. We restrict our attention to one-dimensional flows in BECs with steplike discontinuities. For this case we show that in the hydrodynamic approximation quasinormal modes do not exist. The full dispersion relation, however, allows the existence of quasinormal modes. Remarkably, the spectrum of these modes is not discrete but continuous.

Item Type:	Article
Additional Information:	© 2007 The American Physical Society. C. B. has been funded by the Spanish MEC under Project No. FIS2005-05736-C03-01 with a partial FEDER contribution. G. J. was supported by CSIC Grant No. I3P-BPD2005 of the I3P programme, cofinanced by the European Social Fund, and by he Spanish MEC under Project No. FIS2005-05736-C03-01. L. G. was supported by the Spanish MEC under Project No. FIS2005-05736-C03-02. The authors also acknowledge support from the Spanish MEC Project No. FIS2006-26387-E.
Uncontrolled Keywords:	Analog
Subjects:	Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics
ID Code:	29823
Deposited On:	28 Apr 2015 10:27
Last Modified:	10 Dec 2018 15:09

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