Semiclassical Methods for Hawking Radiation from a Vaidya Black Hole

Abstract

We derive the general form of Hawking temperature for Vaidya black hole in the tunneling pictures. This kind of black hole is regarded as the description of a more realistic one since it's time dependent decreasing mass due to the evaporation process. Clearly, the temperature would be time dependent as our findings. We use the semiclassical methods, namely radial null geodesic and complex paths methods. Both methods are found to give the same results. Then, we discuss the possible form of corresponding entropy.

REVTeX 4, 11 pages, no figures, accepted for publication in IJMPA; v2: eq.5 is corrected

References in corpus (6)

• Fermions Tunnelling from Black Holes
• Tunnelling, Temperature and Taub-NUT Black Holes
• Hawking temperature in the tunneling picture
• Thermal radiation of various gravitational backgrounds
• Black Hole Thermodynamics and the Factor of 2 Problem
• Properties of Black Hole Radiation From Tunnelling

Cited by in corpus (11)

• Tunnelling Methods and Hawking's radiation: achievements and prospects
• Hawking radiation as tunneling from a Vaidya black hole in noncommutative gravity
• Accelerating black holes in the low energy heterotic string theory
• Hidden conformal symmetry for the accelerating Kerr black holes
• Magnetized Reissner-Nordstrom-Taub-NUT spacetime and microscopic entropy
• Evaporation of dynamical horizon with the Hawking temparature in the {\bf K-}essence emergent Vaidya spacetime
• Planck-scale nonthermal correlations in a noncommutative geometry inspired Vaidya black hole
• Black Hole Evaporation in a Noncommutative Charged Vaidya Model
• Quantum Tunnelling for Hawking Radiation from Both Static and Dynamic Black Holes
• On the Photon Motion Near a Five-Dimensional Schwarzschild Black Hole
• A Model of the Collapse and Evaporation of Charged Black Holes