Backreaction in Acoustic Black Holes
Roberto Balbinot, Serena Fagnocchi, Alessandro Fabbri, Giovanni P., Procopio
TL;DR
This paper derives backreaction equations for quantum fluctuations in acoustic black holes, revealing they cool as they radiate phonons and exhibit similarities to near-extremal Reissner-Nordstrom black holes.
Contribution
It provides the first detailed backreaction analysis for acoustic black holes, highlighting their unique thermodynamic behavior and analogies with certain gravitational black holes.
Findings
Acoustic black holes cool as they radiate phonons.
They exhibit similarities to near-extremal Reissner-Nordstrom black holes.
Backreaction equations are derived for quantum fluctuations.
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-Nordstrom black holes.
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