9 research outputs found
Hawking radiation of scalar particles from accelerating and rotating black holes
Hawking radiation of uncharged and charged scalars from accelerating and
rotating black holes is studied. We calculate the tunneling probabilities of
these particles from the rotation and acceleration horizons of these black
holes. Using the tunneling method we recover the correct Hawking temperature as
well
Hawking temperature of rotating charged black strings from tunneling
Thermal radiations from spherically symmetric black holes have been studied
from the point of view of quantum tunneling. In this paper we extend this
approach to study radiation of fermions from charged and rotating black
strings. Using WKB approximation and Hamilton-Jacobi method we work out the
tunneling probabilities of incoming and outgoing fermions and find the correct
Hawking temperature for these objects. We show that in appropriate limits the
results reduce to those for the uncharged and non-rotating black strings
Hawking radiation of Dirac particles from black strings
Hawking radiation has been studied as a phenomenon of quantum tunneling in
different black holes. In this paper we extend this semi-classical approach to
cylindrically symmetric black holes. Using the Hamilton-Jacobi method and WKB
approximation we calculate the tunneling probabilities of incoming and outgoing
Dirac particles from the event horizon and find the Hawking temperature of
these black holes. We obtain results both for uncharged as well as charged
particles
Tunnelling Methods and Hawking's radiation: achievements and prospects
The aim of this work is to review the tunnelling method as an alternative
description of the quantum radiation from black holes and cosmological
horizons. The method is first formulated and discussed for the case of
stationary black holes, then a foundation is provided in terms of analytic
continuation throughout complex space-time. The two principal implementations
of the tunnelling approach, which are the null geodesic method and the
Hamilton-Jacobi method, are shown to be equivalent in the stationary case. The
Hamilton-Jacobi method is then extended to cover spherically symmetric
dynamical black holes, cosmological horizons and naked singularities. Prospects
and achievements are discussed in the conclusions.Comment: Topical Review commissioned and accepted for publication by
"Classical and Quantum Gravity". 101 pages; 6 figure