Resonant Hawking radiation as an instability

David Bermudez; Ulf Leonhardt

doi:10.1088/1361-6382/aaf435

Resonant Hawking radiation as an instability

David Bermudez^*, Ulf Leonhardt

^*Corresponding author for this work

Department of Physics of Complex Systems

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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.

Original language	English
Article number	024001
Number of pages	15
Journal	Classical and Quantum Gravity
Volume	36
Issue number	2
Early online date	18 Dec 2018
DOIs	https://doi.org/10.1088/1361-6382/aaf435
Publication status	Published - 24 Jan 2019

Funding

DB acknowledges the financial support of SEP-Cinvestav (Mexico) project 60-2018. UL was funded by the European Research Council and the Israel Science Foundation.

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10.1088/1361-6382/aaf435

http://arxiv.org/pdf/1808.02210

Cite this

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AB - 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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Resonant Hawking radiation as an instability

Abstract

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