Hawking temperature from scattering off the charged 2 D black hole
نویسنده
چکیده
The charged 2D black hole is visualized as presenting an potential barrier V OUT (r∗) to on-coming tachyon wave. Since this takes the complicated form, an approximate form V APP (r∗) is used for scattering analysis. We calculate the reflection and transmission coefficients for scattering of tachyon off the charged 2D black hole. The Hawking temperature is also derived from the reflection coefficient by Bogoliubov transformation. In the limit of Q → 0, we recover the Hawking temperature of the 2D dilaton black hole.
منابع مشابه
Fermion scattering off dilatonic black holes.
The scattering of massless fermions off magnetically charged dilatonic black holes is reconsidered and a violation of unitarity is found. Even for a single species of fermion it is possible for a particle to disappear into the black hole with its information content. In recent years there has been a lot of interest in the physics of black holes. The issue which has engaged the attention of most...
متن کاملObservation of self-amplifying Hawking radiation in an analog black hole laser
It has been proposed that a black hole horizon should generate Hawking radiation. In order to test this theory, we have created a narrow, low density, very low temperature atomic Bose-Einstein condensate, containing an analog black hole horizon and an inner horizon, as in a charged black hole. We observe Hawking radiation emitted by the black hole. This is the output of the black hole laser. We...
متن کاملTwo-Dimensional Dilatonic Black Holes and Hawking Radiation
Hawking radiation emanating from two-dimensional charged and uncharged dilatonic black holes dimensionally reduced from (2 + 1) spinning and spinless, respectively, BTZ black holes is viewed as a tunnelling process. Two dimensional dilatonic black holes (AdS(2) included) are treated as dynamical backgrounds in contrast to the standard methodology where the background geometry is fixed when eval...
متن کاملHawking radiation from (2 + 1)-dimensional BTZ black holes
Motivated by the Robinson-Wilczek’s recent viewpoint that Hawking radiation can be treated as a compensating energy momentum tensor flux required to cancel gravitational anomaly at the horizon of a Schwarzschild-type black hole, we investigate Hawking radiation from the rotating (2 + 1)-dimensional BTZ black hole and the charged (2 + 1)-dimensional BTZ black hole, via cancellation of gauge and ...
متن کاملDynamics of extremal black holes.
Particle scattering and radiation by a magnetically charged, dilatonic black hole is investigated near the extremal limit at which the mass is a constant times the charge. Near this limit a neighborhood of the horizon of the black hole is closely approximated by a trivial product of a two-dimensional black hole with a sphere. This is shown to imply that the scattering of long-wavelength particl...
متن کامل