Quasibound states of Schwarzschild acoustic black holes

In this paper, we study the recently proposed Schwarzschild acoustic black hole spacetime, in which we investigate some physical phenomena related to the effective geometry of this background, including the analogous Hawking radiation and the quasibound states. We calculate the spectrum of quasibound state frequencies and the wave functions on the Schwarzschild acoustic background by using the polynomial condition of the general Heun function, and then we discuss the stability of the system. We also compare the resonant frequencies of the Schwarzschild acoustic black hole with the ones by the standard Schwarzschild black hole. Our results may shed some light on the physics of black holes and their analog models in condensed matter. Moreover, these studies could provide the possibility, in principle, for laboratory testing of effects whose nature is unquestionably associated with purely quantum effects in gravity.

Automated summary

This paper investigates the Schwarzschild acoustic black hole spacetime, exploring physical phenomena related to its effective geometry such as analogous Hawking radiation and quasibound states. By calculating quasibound state frequencies and wave functions, and comparing them with standard Schwarzschild black hole frequencies, the study provides insights into black hole physics and analog models in condensed matter, potentially offering the possibility of laboratory testing for effects associated with purely quantum effects in gravity.