TY - JOUR
T1 - Quasinormal modes, superradiance and area spectrum for 2 + 1 acoustic black holes
AU - Lepe, Samuel
AU - Saavedra, Joel
N1 - Funding Information:
We are grateful to E. Ayon for many enlightening discussions. We also acknowledge the referee for useful suggestions in order to improve the presentation of the results of this Letter. This work was supported by COMISION NACIONAL DE CIENCIAS Y TECNOLOGIA through FONDECYT Grant 1040229 (S.L.) and Postdoctoral Grant 3030025 (J.S.). This work was also partially supported by PUCV Grant No. 123.779/2005 (S.L.) and No. 123.778/2005 (J.S.). The authors wish to thank Centro de Estudios Científicos (CECS) and Departamentos de Física de la Universidad de La Frontera y de la Universidad de Concepción for its kind hospitality. We thank U. Raff for a careful reading of the manuscript.
PY - 2005/6/30
Y1 - 2005/6/30
N2 - We present an exact expression for the quasinormal modes of acoustic disturbances in a rotating (2+1)-dimensional sonic black hole (draining bathtub fluid flow) in the low frequency limit and evaluate the adiabatic invariant proposed by Kunstatter. We also compute, via Bohr-Sommerfeld quantization rule the equivalent area spectrum for this acoustic black hole, and we compute the superradiance phenomena for pure spinning 2+1 black holes.
AB - We present an exact expression for the quasinormal modes of acoustic disturbances in a rotating (2+1)-dimensional sonic black hole (draining bathtub fluid flow) in the low frequency limit and evaluate the adiabatic invariant proposed by Kunstatter. We also compute, via Bohr-Sommerfeld quantization rule the equivalent area spectrum for this acoustic black hole, and we compute the superradiance phenomena for pure spinning 2+1 black holes.
UR - http://www.scopus.com/inward/record.url?scp=20444401539&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2005.05.021
DO - 10.1016/j.physletb.2005.05.021
M3 - Article
AN - SCOPUS:20444401539
SN - 0370-2693
VL - 617
SP - 174
EP - 181
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -