Backreaction in Acoustic Black Holes
Abstract
The backreaction equations for the linearized quantum fluctuations in an acoustic black hole are given. The solution near the horizon, obtained within a dimensional reduction, indicates that acoustic black holes, unlike Schwarzschild ones, get cooler as they radiate phonons. They show remarkable analogies with near-extremal Reissner-Nordström black holes.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2005
- DOI:
- 10.1103/PhysRevLett.94.161302
- arXiv:
- arXiv:gr-qc/0405096
- Bibcode:
- 2005PhRvL..94p1302B
- Keywords:
-
- 04.70.Dy;
- 04.62.+v;
- 47.40.Ki;
- Quantum aspects of black holes evaporation thermodynamics;
- Quantum field theory in curved spacetime;
- Supersonic and hypersonic flows;
- General Relativity and Quantum Cosmology;
- Condensed Matter - Other;
- High Energy Physics - Theory
- E-Print:
- 4 pages, revtex, 1 figure. revised version, published in prl