PT Journal AU Balbinot, R Fabbri, A Dudley, RA Anderson, PR TI Particle production in the interiors of acoustic black holes SO Physical Review D JI Phys. Rev. D PY 2019 BP 105021 EP 13pp VL 100 IS 10 DI 10.1103/PhysRevD.100.105021 LA English AB Phonon creation inside the horizons of acoustic black holes is investigated using two simple toy models. It is shown that, unlike what occurs in the exterior regions, the spectrum is not thermal. This nonthermality is due to the anomalous scattering that occurs in the interior regions. ER