共查询到20条相似文献，搜索用时 31 毫秒
1.
We study the effects of the generalized uncertainty principle in the tunneling formalism for Hawking radiation to evaluate the quantum-corrected Hawking temperature and entropy for a Kerr black hole. By assumption of a spatially flat universe accompanied with expansion of metric, the modified area and entropy of Kerr black hole are calculated and we could obtain an expression for entropy of black hole that is changing with respect to time and Bekenstein-Hawking temperature. 相似文献
2.
Using the new global embedding approach and analytical continuation method of wave function we discuss Hawking radiation of
acoustic black holes. Unruh/Hawking temperature of the dielectric black hole is derived. The corresponding relation among
these methods that calculate Hawking radiation of dielectric black hole is established. Our result shows that these methods
are equivalent. 相似文献
3.
The massive particles tunneling method has been used to investigate the Hawking non-thermal and purely thermal radiations of Schwarzschild Anti-de Sitter (SAdS) black hole. Considering the spacetime background to be dynamical, incorporate the self-gravitation effect of the emitted particles the imaginary part of the action has been derived from Hamilton-Jacobi equation. Using the conservation laws of energy and angular momentum we have showed that the non-thermal and purely thermal tunneling rates are related to the change of Bekenstein-Hawking entropy and the derived emission spectrum deviates from the pure thermal spectrum. The result obtained for SAdS black hole is also in accordance with Parikh and Wilczek’s opinion and gives a correction to the Hawking radiation of SAdS black hole. 相似文献
4.
We have investigated Hawking non-thermal and purely thermal Radiations of Reissner Nordström anti-de Sitter (RNAdS) black hole by massive particles tunneling method. The spacetime background has taken as dynamical, incorporate the self-gravitation effect of the emitted particles the imaginary part of the action has derived from Hamilton-Jacobi equation. We have supposed that energy and angular momentum are conserved and have shown that the non-thermal and thermal tunneling rates are related to the change of Bekenstein-Hawking entropy and the derived emission spectrum deviates from the pure thermal spectrum. The results for RNAdS black hole is also in the same manner with Parikh and Wilczek’s opinion and explored the new result for Hawking radiation of RNAdS black hole. 相似文献
5.
Using the tunneling method we derive the Hawking temperature of the nonextremal rotating charged black hole in the Gödel universe of five-dimensional minimal supergravity theory found by Wu. We successfully recovered the tunneling probability of charged Dirac particles and the expected Hawking temperature of the black hole, which is exactly consistent with that obtained by other methods. 相似文献
6.
T. Ibungochouba Singh 《Astrophysics and Space Science》2013,347(2):271-276
Hawking radiation effect of Maxwell’s electromagnetic fields in the Kerr-Newman black hole space-time is investigated using two different tortoise coordinate transformations. It has been shown that the new tortoise coordinate transformation produces constant term ξ in the expression of surface gravity and Hawking temperature. If ξ is set to zero, the surface gravity and Hawking temperature will be equal to those obtained from the old tortoise coordinate transformation. This indicates that new transformation is more reliable and accurate. The black body radiant spectrum of photon displays a new spin-rotation coupling effect. 相似文献
7.
8.
In this study, we explore a particular type Hawking radiation which ends with zero temperature and entropy. The appropriate black holes for this purpose are the linear dilaton black holes. In addition to the black hole choice, a recent formalism in which the Parikh-Wilczek’s tunneling formalism amalgamated with quantum corrections to all orders in ? is considered. The adjustment of the coefficients of the quantum corrections plays a crucial role on this particular Hawking radiation. The obtained tunneling rate indicates that the radiation is not pure thermal anymore, and hence correlations of outgoing quanta are capable of carrying away information encoded within them. Finally, we show in detail that when the linear dilaton black hole completely evaporates through such a particular radiation, entropy of the radiation becomes identical with the entropy of the black hole, which corresponds to “no information loss”. 相似文献
9.
The thermal character of inner horizon in a Reissner-Nordstrom black hole is studied via Hamilton-Jacobi method. There is
“Hawking absorption” as a quantum effect near the inner horizon, and a negative temperature of the inner horizon was attained
by choosing an observer outside the black hole. Using a redefined entropy of the black hole, we give a new expression of Bekenstein-Smarr
formula. The redefined entropy satisfies Nernst Theorem, so it can be regarded as Planck absolute entropy of the Reissner-Nordstrom
black hole. 相似文献
10.
We study the quantum tunneling of scalars from charged accelerating and rotating black hole with NUT parameter. For this purpose we use the charged Klein-Gordon equation. We apply WKB approximation and the Hamilton-Jacobi method to solve charged Klein-Gordon equation. We find the tunneling probability of outgoing charged scalars from the event horizon of this black hole, and hence the Hawking temperature for this black hole 相似文献
11.
The Hawking radiation is considered as a quantum tunneling process, which can be studied in the framework of the Hamilton–Jacobi method. In this study, we present the wave equation for a mass generating massive and charged scalar particle (boson). In sequel, we analyse the quantum tunneling of these bosons from a generic 4-dimensional spherically symmetric black hole. We apply the Hamilton–Jacobi formalism to derive the radial integral solution for the classically forbidden action which leads to the tunneling probability. To support our arguments, we take the dyonic Reissner–Nordström black hole as a test background. Comparing the tunneling probability obtained with the Boltzmann formula, we succeed in reading the standard Hawking temperature of the dyonic Reissner–Nordström black hole. 相似文献
12.
Hawking temperature and entropy of Kerr-Sen black hole as a series with dependence on Plank constant
By assumption of a low-energy string theory in addition to the necessity of the semi-classic expansion on action, we study Hawking temperature and entropy of Kerr-Sen black hole. These subjects, recently have introduced in the literature and consist of the new terms of temperature and entropy as the expansion form with powers of ?. Comparing the results with the high energy black hole demonstrates how the semi-classic approximation affects the thermodynamics of the Kerr-Sen black hole, corrected terms classical action and the entropy. 相似文献
13.
《New Astronomy》2024
In this paper, we analyze the thermodynamic properties of acoustic Schwarzschild black holes with its parameter. The study is conducted in the extended phase space displaying the phase transition. This phase transition is examined through Gibbs free energy, specific heat, and heat capacity. Later, we discuss the thermal stability of acoustic black holes through Hawking temperature by identifying their stable and unstable regions. We calculate the corrected entropy to examine the thermal fluctuations. Through the corrected entropy we observe that there is no fluctuation in the case of small black holes. We also discuss the energy emission process from acoustic black holes. Moreover, we employ the generalized uncertainty principle to obtain a modified Lagrangian equation. We analyze the tunneling and Hawking temperature of the acoustic Schwarzschild black hole after solving the field equations. 相似文献
14.
Recently, Umetsu applied the tunneling method to the research on Hawking radiation of black holes using the dimensional reduction method near the horizon. In a simple way he obtained the radiation temperature of Kerr-Newman black hole. In this paper, using the dimensional reduction method near the horizon, we apply the tunneling method to the research on Hawking radiation of a general Kerr-de Sitter metrics in all dimensions. Our results support the views of Umetsu and extend the tunneling method proposed by Parikh and Wilczek. 相似文献
15.
It is shown that an outgoing null radiation field in the outer space of a Kerr-Newman black hole is darkened by the rotation
of the black hole. This rotational darkening is calculated for a spheroid emitting null radiation normally to its surface,
yielding the von Zeipel-like effectthat the equatorial region is darkened more strongly than the polar regions.This effect
is not confined to the case of black holes but is also observable for relativistically rotating fluid spheroids such as atmospheres
of pulsars or neutron stars. Moreover, application to Hawking radiation suggests that the black hole cannot be viewed as a
classical black body but that the Hawking radiationis a global geometric effect.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
16.
动态Kerr黑洞的事件视界是旋转对称的,不是球对称的.它的位置、角速度和Hawking温度不仅依赖于时间,而且与极角有关. 相似文献
17.
A. Farmany 《Astrophysics and Space Science》2012,339(1):131-134
In the recent interest to the quantum black hole spectroscopy, we calculate the quantum gravity effects to Hawking radiation.
In the view of our calculation, the quantum black hole radiation is a stimulated emission. 相似文献
18.
A direct method for calculating the temperature of a hawking particle is carried out. Study of the quantum gravity effects
on the hawking radiation is made by imposing a generalized time energy uncertainty principle. It is shown that the Hawking
radiation of mini black hole is hotter than the hawking calculations. 相似文献
19.
Mahamat Saleh Bouetou Thomas Bouetou Timoleon Crepin Kofane 《Astrophysics and Space Science》2011,333(2):449-455
We investigate quasinormal modes (QNMs) and Hawking radiation of a Reissner-Nordström black hole surrounded by quintessence. The Wentzel-Kramers-Brillouin (WKB) method is used to evaluate the QNMs and the rate of radiation. The results show that due to the interaction of the quintessence with the background metric, the QNMs of the black hole damp more slowly when increasing the density of quintessence and the black hole radiates at slower rate. 相似文献
20.
Dragan Slavkov Hajdukovic 《Astrophysics and Space Science》2010,330(1):1-5
In this paper, motivated by fermions tunneling method of 4 dimensional black holes, we extend the analysis to the charged
Kerr black hole in five dimension by constructing a set of appropriate matrices γ
μ
for general covariant Dirac equation. As a result, we successfully recover the expected Hawking temperature. 相似文献