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arXiv · 1808.02210

Resonant Hawking radiation as an instability

David Bermudez·Ulf Leonhardt
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Abstract

We consider a simple model for a black-hole laser: a Bose-Einstein condensate with uniform speed of sound and partially uniform flow, establishing two horizons, a black-hole and a white-hole horizon. Waves confined between the horizons are amplified similar to radiation in a laser cavity. Black-hole lasing appears as an instability with discrete sets of modes given approximately by a round-trip condition. We found that, in addition to the regular Hawking radiation, trans-Planckian radiation does tunnel out of the black-hole laser.

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David Bermudez, Ulf Leonhardt. 2018-08-07. Resonant Hawking radiation as an instability. https://doi.org/10.1088/1361-6382%2Faaf435

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