RT Journal Article
T1 Quasinormal mode analysis in BEC acoustic black holes
A1 Barcelo, C.
A1 Cano, A.
A1 Garay Elizondo, Luis Javier
A1 Jannes, G.
AB 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.
PB Amer Physical Soc
SN 1550-7998
YR 2007
FD 2007-04
LK https://hdl.handle.net/20.500.14352/51350
UL https://hdl.handle.net/20.500.14352/51350
LA eng
NO © 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.
NO Spanish MEC
NO CSIC
DS Docta Complutense
RD 10 abr 2025