Ergoregion instability: The hydrodynamic vortex
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- PhysRevD.89.124008
Final published version, 1.36 MB, PDF document
Four-dimensional, asymptotically flat spacetimes with an ergoregion but no horizon have been shown to be linearly unstable against a superradiant-triggered mechanism. This result has wide implications in the search for astrophysically viable alternatives to black holes, but also in the understanding of black holes and Hawking evaporation. Here we investigate this instability in detail for a particular setup that can be realized in the laboratory: the hydrodynamic vortex, an effective geometry for sound waves, with ergoregion and without an event horizon.
Original language | English |
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Article number | 124008 |
Journal | Physical Review D |
Volume | 89 |
Issue number | 12 |
Number of pages | 11 |
ISSN | 1550-7998 |
DOIs | |
Publication status | Published - 6 Jun 2014 |
Externally published | Yes |
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Research areas
ID: 300079459