Analogue Penrose process in rotating acoustic black Hole
- URL: http://arxiv.org/abs/2205.01454v1
- Date: Tue, 3 May 2022 12:32:11 GMT
- Title: Analogue Penrose process in rotating acoustic black Hole
- Authors: Decheng Ma, Enrique Solano, Chenglong Jia, Lucas Chibebe C\'eleri
- Abstract summary: We consider the analogue Penrose process in a rotating acoustic black hole based on a quantum fluid.
By defining the effective Komar mass and angular momentum of this acoustic black hole, we found that energy can be extracted from it.
- Score: 0.0
- License: http://creativecommons.org/licenses/by-nc-sa/4.0/
- Abstract: Analogue gravity stands today as an important tool for the investigation of
gravitational phenomena that would be otherwise out of reach considering our
technology. We consider here the analogue Penrose process in a rotating
acoustic black hole based on a quantum fluid described by the draining bathtub
model. Because of the rotating nature of this acoustic spacetime, a particle,
that is a phonon travelling on the quantum fluid, will experience the well
known frame dragging effect. By defining the effective Komar mass and angular
momentum of this acoustic black hole, we found that energy can be extracted
from it. At the same time, we show that the black hole angular momentum and
mass are reduced, in complete analogy with the Penrose effect.
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