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Título: | Quasinormal mode analysis in BEC acoustic black holes |
Autor: | Barceló, Carlos CSIC ORCID; Cano, A.; Garay, Luis Javier CSIC ORCID; Jannes, Gil CSIC ORCID | Palabras clave: | [PACS] Quantum aspects of black holes, evaporation, thermodynamics [PACS] Dynamic properties of Bose-Einstein condensates; collective and hydrodynamic excitations, superfluid flow [PACS] Experimental studies of gravity |
Fecha de publicación: | 13-abr-2007 | Editor: | American Physical Society | Citación: | Physical Review D 75(8): 084024 (2007) | Resumen: | 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. | Descripción: | 7 pages, 3 figures.-- PACS nrs.: 04.70.Dy; 03.75.Kk; 04.80.-y. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.75.084024 | URI: | http://hdl.handle.net/10261/12741 | DOI: | 10.1103/PhysRevD.75.084024 | ISSN: | 0556-2821 |
Aparece en las colecciones: | (IAA) Artículos (CFMAC-IEM) Artículos |
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Barcelo.pdf | 366,18 kB | Adobe PDF | Visualizar/Abrir |
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