Dumb holes: analogues for black holes.
The use of sonic analogues to black and white holes, called dumb or deaf holes, to understand the particle production by black holes is reviewed. The results suggest that the black hole particle production is a low-frequency and low-wavenumber process.
CIAR Cosmology and Gravity Program, Department of Physics, University of British Columbia, Vancouver, Canada. unruh@physics.ubc.ca
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Unruh