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Black Holes Lasers In Bose-Einstein Condensates

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Posted by Brian Kirk Parquette on January 13, 2001 21:12:19 UTC

High Energy Physics - Theory, abstract
From: Steven Corley
Date (v1): Wed, 24 Jun 1998 17:57:12 GMT (23kb)
Date (revised v2): Wed, 16 Dec 1998 18:16:17 GMT (25kb)
Date (revised v3): Mon, 15 Feb 1999 21:41:50 GMT (24kb)
Black hole lasers
Authors: S. Corley, T. Jacobson
Comments: RevTex, 13 pages, 4 eps figures; minor corrections, final version to be published in Phys. Rev. D
Journal-ref: Phys.Rev. D59 (1999) 124011
High frequency dispersion does not alter the low frequency spectrum of Hawking radiation from a single black hole horizon,
whether the dispersion entails subluminal or superluminal group velocities. We show here that in the presence of an inner
horizon as well as an outer horizon the superluminal case differs dramatically however. The negative energy partners of
Hawking quanta return to the outer horizon and stimulate more Hawking radiation if the field is bosonic or suppress it if the
field is fermionic. This process leads to exponential growth or damping of the radiated flux and correlations among the quanta
emitted at different times, unlike in the usual Hawking effect. These phenomena may be observable in condensed matter black
hole analogs that exhibit "superluminal" dispersion.

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