Statistical Entropy and Superradiance in 2+1 Dimensional Acoustic Black Holes
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
We study ``draining bathtub'' as an acoustic analogue of a three-dimensional rotating black hole. Rotating fluid near the sonic horizon necessarily gives rise to the superradiant modes, which are partially responsible for the thermodynamic quantities in this rotating vortex-like hole. Using the recently suggested thin-layer method overcoming some difficulties from the well-known brick-wall method, we explicitly calculate the free energy of the system by treating the superradiance carefully and obtain the desirable entropy formula.
13 pages, 1 figure. Change in authors. The improved version to be published in J. Kor. Phys. Soc
13 pages, 1 figure. Change in authors. The improved version to be published in J. Kor. Phys. Soc