265 research outputs found
Quasinormal modes of Unruh's Acoustic Black Hole
We have studied the sound perturbation of Unruh's acoustic geometry and we
present an exact expression for the quasinormal modes of this geometry. We are
obtain that the quasinormal frequencies are pure-imaginary, that give a purely
damped modes.Comment: 5 Page
The Effect of the Gauss-Bonnet term to Hawking Radiation from arbitrary dimensional Black Brane
We investigate the probabilities of the tunneling and the radiation spectrums
of the massive spin-1 particles from arbitrary dimensional Gauss-Bonnet-Axions
(GBA) Anti-de Sitter (AdS) black brane, via using the WKB approximation to the
Proca spin-1 field equation. The tunneling probabilities and Hawking
temperature of the arbitrary dimensional GBA AdS black brane is calculated via
the Hamilton-Jacobi approach. We also compute the Hawking temperature via
Parikh-Wilczek tunneling approach. The results obtained from the two methods
are consistent. In our setup, the Gauss-Bonnet (GB) coupling affects the
Hawking temperature if and only if the momentum of axion fields is
non-vanishing.Comment: 11 pages; version 2,references added; published versio
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