共查询到20条相似文献,搜索用时 15 毫秒
1.
Ying Zhou 《International Journal of Theoretical Physics》2013,52(5):1431-1439
We use WKB approach and the finite difference method to research non-minimal coupling scalar field quasinormal modes of Schwarzschild-de Sitter black hole with a global monopole. The results show that the small positive constant η makes the scalar field decreasing, and the quasinormal modes of the real part increases but the imaginary parts decreases with the decreasing of the breaking scale ρ. While, when the horizon r h increase, the actual oscillation frequency decreases, while the decay time scale increases. On the other hand, when the horizon r h increases, the oscillation is difficult to stabilize. 相似文献
2.
Dirac Quasinormal Modes of the Schwarzschild-anti-de Sitter Black Hole with a Global Monopole 下载免费PDF全文
The quasinormal modes associated with the decay of Dirac field perturbation around a Schwarzschild-anti-de Sitter black hole with a global monopole (SAdSBHGM) are calculated using the Horowitz-Hubeny approach. For the large SAdSBHGM, we find that η has little effect on the quaslnormal frequencies. However, for the intermediate and small SAdSBHGM, in the limit η→1/√8π, the real parts of the fundamental quasinormal frequencies approximate the linear functions of Tand the imaginary ones approximate the linear functions of r+. 相似文献
3.
Using the WKB method and HYBRD program, we evaluate the low-lying massive charged scalar and Dirac field quasinormal modes (QNMs) of a Reissner-Nordström black hole. We discuss the real and imaginary parts of QNMs vary with the charge of black hole, the masses and charges of scalar and Dirac fields. 相似文献
4.
The thermodynamical quantities are usually considered as the independent ones in the case of the existence of multi-horizons. Comparing the first laws for the event horizon and cosmological horizon of Schwarzschild-de Sitter space-time, we find them share the same values of mass, charge and cosmological constant, which might imply that there exists entanglement between the two horizons. Naturally we attempt to add an extra term, which contributed to the total entropy of the black hole. We recalculate the total entropy and the effective specific heat by taking the globally effective first law and find that they will be emanative when the two horizons approach to each other. 相似文献
5.
Ying Zhou Shu Zheng Yang Guo Ping-Li 《International Journal of Theoretical Physics》2013,52(10):3367-3375
According to the basic rules of finite difference method,we calculate massive charged scalar field quasinormal modes of Reissner-Nordström-de Sitter Black Hole with a global monopole, which shows that when electronic quantity of scalar field e is comparatively small, all the factors including angular quantum number, the mass of scalar field, the size of horizon and the breaking scale will influence the frequency spectrum of quasinormal modes. When e is more than some definite critical value, second-order transition will appear and after that the curve of frequency spectrum rises, the black hole is no longer steady, which means when e is greater than some definite critical value, the structure of black hole can be changed. While the size of angular quantum number and breaking scale will influence the happening time of second-order transition. When breaking scale is less than some definite critical value, the second-order transition can be vanished. 相似文献
6.
Quantum Entropy of Spin Fields in the Schwarzschild-Anti-de Sitter Black Hole with a Global Monopole
Gu-Qiang Li 《Journal of statistical physics》2006,125(3):749-756
The quantum entropies of gravitational, electromagnetic, neutrino and scalar fields in the static Schwarzschild-anti-de Sitter black hole with a global monopole are investigated by using the brick-wall model. The quantum entropy contain two parts: One is quadratically divergent term which takes a geometric character; the other is spin-dependent, logarithmically divergent terms. The whole expression of the entropy of a spin field does not take the form of the scalar field.
PACS: 04.70. Dy, 97.60.Lf 相似文献
7.
Quasinormal modes(QNMs) for Dirac perturbations of f(R) black holes(BHs) are described in this paper,involving two types of f(R) solution: f(R)(Schwarzschild) BHs and f(R)(Maxwell) BHs. With the finite difference method, the stability of the f(R) black holes(BHs) is analysed and the threshold range of f(R)(Schwarzschild) BHs and f(R)(Maxwell) BHs is defined respectively. The results show that due to the presence of the correction factor R0, the damping rate of Dirac field decreases. Meanwhile, the influence of angular quantum number values |k| on the f(R) BHs is investigated. The results indicate that the QNMs oscillation becomes tenser and damping speed slowly decreases with|k| increasing. Furthermore, under the Dirac perturbation, the stability of f(R) solutions can be reflected in the manner of Dirac QNMs. The relationships between the QNMs and the parameters(|k|, charge Q and mass m) are discussed in massless, and massive cases, by contrast to the classical BHs. 相似文献
8.
Applying Parikh's quantum tunneling model, we study the quantum tunneling radiation of Reissner-Nordström de Sitter black hole with a global monopole. The result shows that the tunneling rates at the event
horizon and the cosmic horizon are related to Bekenstein-Hawking entropy
if we take the energy conservation into consideration, and the true radiate
spectrum is not precisely thermal. 相似文献
9.
R.A. Konoplya 《General Relativity and Gravitation》2002,34(2):329-335
We sketch the results of calculations of the quasinormal frequencies of the electrically charged dilaton black hole. At the earlier phase of evaporation (Q is less than 0.7–0.8M), the dilaton black hole rings with the complex frequencies which differ negligibly from those of the Reissner-Nordström black hole. The spectrum of the frequencies weakly depends upon the dilaton coupling. 相似文献
10.
Quantum Entropy of Black Hole with Internal Global Monopole 总被引:2,自引:0,他引:2
Using the generalized uncertainty relation, the new equation of state
density is obtained, and then the entropy of black hole with an internal
global monopole is discussed. The divergence that appears in black hole
entropy calculation through original brick-wall model is overcome. The
result of the direct proportion between black hole entropy and its event
horizon area is drawn and given. The result shows that the black hole
entropy must be the entropy of quantum state near the event horizon. 相似文献
11.
Ren Jun 《International Journal of Theoretical Physics》2008,47(12):3156-3161
In this paper, we extend Parikh’ work to the non-stationary black hole, a non-static black hole with the internal global monopole.
We view Hawking radiation as a tunneling process across the event horizon and calculate the tunneling probability. We find
that the result is different from Parikh’s work because
is the function of Bondi mass m(v). 相似文献
12.
Hawking radiation from cosmological horizon and event horizon of the Reissner-Nordström de Sitter black hole with a global monopole is studied via a new method that was propounded by Robinson and Wilzek and elaborated by Banerjee and Kulkarni. The results show that the gauge current and energy-momentum tensor fluxes, which required keeping gauge covariance and general coordinate invariance at the quantum level in the effective field theory, are exactly equivalent to those of Hawking radiation from the event horizon and the cosmological horizon,
respectively. 相似文献
13.
We investigate transverse electromagnetic waves propagating in a plasma influenced by the gravitational field of the Schwarzschild-de
Sitter black hole. Applying 3+1 spacetime split we derive the relativistic two-fluid equations to take account of gravitational
effects due to the event horizon and describe the set of simultaneous linear equations for the perturbations. We use a local
approximation to investigate the one-dimensional radial propagation of Alfvén and high frequency electromagnetic waves. We
derive the dispersion relation for these waves and solve it for the wave number k numerically. 相似文献
14.
We investigate the area and entropy spectra of D-dimensional large Schwarzschild black holes. By utilizing the new physical interpretation of quasinormal mode frequency we find that a large Schwarzschild-AdS black hole has an equally spaced area spectrum and an equidistant entropy spectrum; both are dependent on the spacetime dimension. 相似文献
15.
Pavel Bakala Petr Čermák Stanislav Hledík Zdeněk Stuchlík Kamila Truparová 《Central European Journal of Physics》2007,5(4):599-610
We have developed a realistic, fully general relativistic computer code to simulate optical projection in a strong, spherically
symmetric gravitational field. The standard theoretical analysis of optical projection for an observer in the vicinity of
a Schwarzschild black hole is extended to black hole spacetimes with a repulsive cosmological constant, i.e, Schwarzschild-de
Sitterspacetimes. Influence of the cosmological constant is investigated for static observers and observers radially free-falling
from the static radius. Simulations include effects of the gravitational lensing, multiple images, Doppler and gravitational
frequency shift, as well as the intensity amplification. The code generates images of the sky for the static observer and
a movie simulations of the changing sky for the radially free-falling observer. Techniques of parallel programming are applied
to get a high performance and a fast run of the BHC simulation code.
相似文献
16.
CHEN Shi-Wu LIU Xiong-Wei LIN Kai ZENG Xiao-Xiong YANG Shu-Zheng 《理论物理通讯》2008,50(8):537-540
Hawking radiation from cosmological horizon and event horizon of the Reissner-Nordstrom de Sitter black hole with a global monopole is studied via a new method that was propounded by Robinson and Wilzek and elaborated by Banerjee and Kulkarni. The results show that the gauge current and energy-momentum tensor fluxes, which required keeping gauge covariance and general coordinate invariance at the quantum level in the effective field theory, are exactly equivalent to those of Hawking radiation from the event horizon and the cosmological horizon, respectively. 相似文献
17.
A thin layer of the event horizon vicinity to the two-dimension black hole with a global monopole is considered as a system
of the Casimir type. The energy-momentum tensor is derived in Boulware vacuum, Hartle-Hawking vacuum and Unruh vacuum respectively.
The values are derived in the massless scalar field which satisfies the Dirichlet boundary conditions. Using the Wald's axioms,
the result is got which is the same with the one derived by the usual regularized methods. Meanwhile, the energy, energy density,
and pressure acting on the boundaries at the asymptotically flat background also are calculated too, and from the energy,
Casimir force is derived. The Casimir energy and Casimir force are compared respectively in the background before and after
radiation.
PACS: 42.50.Lc. 相似文献
18.
Quantum Tunneling Radiation of Reissner-Nordstrom de Sitter Black Hole with a Global Monopole 总被引:1,自引:0,他引:1
《理论物理通讯》2006,45(3)
19.
The exact metric of a Schwarzschild black hole in the true radiation gauge was recently reported.In this work, we base on this gravity and calculate the gravitational deflection of relativistic massive particles up to the fourth post-Minkowskian order. It is found that the result is consistent with the previous formulations for both the case of dropping the fourth-order contribution and the case of light deflection. Our result might be helpful for future high-accuracy observations. 相似文献
20.
Kai Lin Jin Li ShuZheng Yang XiaoTao Zu 《International Journal of Theoretical Physics》2013,52(4):1370-1378
The massive scalar quasinormal modes are researched in higher dimensional small Dilatonic spacetime via 6-order WKB approach and finite difference method. In this paper, we study the effect of quasinormal modes frequency in several dimensional cases, and the results show that, if the out event horizon keeps constant, the frequencies are higher but the black holes are more stable when dimension is higher or inner horizon is larger. On the other hand, we also focus on the effect of parameter a and scalar particle mass m. The calculation shows that the effect of m is observably stronger than the effect of a. 相似文献