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Title: Quasinormal mode analysis in BEC acoustic black holes

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.

Authors:
;  [1];  [2];  [3];  [1];  [3]
  1. Instituto de Astrofisica de Andalucia, CSIC, Camino Bajo de Huetor 50, 18008 Granada (Spain)
  2. Departamento de Fisica Teorica II, Universidad Complutense de Madrid, 28040 Madrid (Spain)
  3. (Spain)
Publication Date:
OSTI Identifier:
21020393
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.75.084024; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; APPROXIMATIONS; BLACK HOLES; BOSE-EINSTEIN CONDENSATION; COSMOLOGY; DISPERSION RELATIONS; ONE-DIMENSIONAL CALCULATIONS

Citation Formats

Barcelo, C., Cano, A., Garay, L. J., Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Jannes, G., and Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid. Quasinormal mode analysis in BEC acoustic black holes. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.084024.
Barcelo, C., Cano, A., Garay, L. J., Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Jannes, G., & Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid. Quasinormal mode analysis in BEC acoustic black holes. United States. doi:10.1103/PHYSREVD.75.084024.
Barcelo, C., Cano, A., Garay, L. J., Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid, Jannes, G., and Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid. Sun . "Quasinormal mode analysis in BEC acoustic black holes". United States. doi:10.1103/PHYSREVD.75.084024.
@article{osti_21020393,
title = {Quasinormal mode analysis in BEC acoustic black holes},
author = {Barcelo, C. and Cano, A. and Garay, L. J. and Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid and Jannes, G. and Instituto de Estructura de la Materia, CSIC, Serrano 121, 28006 Madrid},
abstractNote = {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.},
doi = {10.1103/PHYSREVD.75.084024},
journal = {Physical Review. D, Particles Fields},
number = 8,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}