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Phys. Rev. D 73, 104011 (2006) [5 pages]

Energy flow in acoustic black holes

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K. Choy, T. Kruk, M. E. Carrington, and T. Fugleberg
Department of Physics, Brandon University, Brandon, Manitoba, R7A 6A9 Canada and Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba, Canada

J. Zahn, R. Kobes, and G. Kunstatter
Department of Physics, University of Winnipeg, Winnipeg, Manitoba, R7A 6A9 Canada and Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba, Canada

D. Pickering
Department of Mathematics, Brandon University, Brandon, Manitoba, R7A 6A9 Canada

Received 13 October 2005; published 10 May 2006

We present the results of an analysis of superradiant energy flow due to scalar fields incident on an acoustic black hole. In addition to providing independent confirmation of the recent results in [ E. Berti, V. Cardoso and J. P. S. Lemos Phys. Rev. D 70 124006 (2004)], we determine in detail the profile of energy flow everywhere outside the horizon. We confirm explicitly that in a suitable frame the energy flow is inward at the horizon and outward at infinity, as expected on physical grounds.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.73.104011
DOI:
10.1103/PhysRevD.73.104011
PACS:
04.70.Dy, 04.70.Bw
 
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