Backreaction in acoustic black holes.
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.
Balbinot
Roberto
R
Dipartimento di Fisica dell'Università di Bologna and INFN sezione di Bologna, Via Irnerio 46, 40126 Bologna, Italy. balbinot@bo.infn.it
Fagnocchi
Serena
S
Fabbri
Alessandro
A
Procopio
Giovanni P
GP