RESONANT FREQUENCIES OF CHARGED SCALAR AND DIRAC FIELDS IN KERR–NEWMAN BLACK-HOLE SPACE–TIME

2007 ◽  
Vol 16 (01) ◽  
pp. 81-92 ◽  
Author(s):  
JILIANG JING ◽  
QIYUAN PAN ◽  
XI HE
Keyword(s):  
Black Hole ◽  
Imaginary Part ◽  
Space Time ◽  
Charged Scalar ◽  
Resonant Frequencies ◽  
Dirac Fields ◽  
Quantum Numbers ◽  
Newman Black Hole

The resonant frequencies of the charged scalar and Dirac fields in the near extremal Kerr–Newman black hole are studied. It is found that the expressions of the resonant frequencies for the charged scalar and Dirac fields with purely real δ are different because the parameters qs are different and the imaginary part has opposing symbol for the two fields. It is also shown that the long-lived resonant frequencies depend on the angular quantum numbers l and m.

Trajectories of material particles in Kerr–Newman–de Sitter space–time

1989 ◽  
Vol 67 (5) ◽  
pp. 501-504
Author(s):  
K. D. Krori ◽  
Ranjana Choudhury ◽  
J. C. Sarmah
Keyword(s):  
Black Hole ◽  
Equatorial Plane ◽  
De Sitter Space ◽  
Space Time ◽  
De Sitter ◽  
Newman Black Hole

In this paper we show that in the Kerr–Newman–de Sitter space–time material particles may move in stable orbits in the equatorial plane (θ = π/2) of the Kerr–Newman black hole.

scholarly journals Hawking radiation of Dirac fields in the (2+1)-dimensional black hole space-time

1995 ◽  
Vol 51 (4) ◽  
pp. 1787-1792 ◽  
Author(s):  
Seungjoon Hyun ◽  
Yong-Seon Song ◽  
Jae Hyung Yee
Keyword(s):  
Black Hole ◽  
Hawking Radiation ◽  
Space Time ◽  
Dirac Fields ◽  
Dimensional Black Hole

Dirac quasi-normal frequencies in a noncommutative black hole space–time

2019 ◽  
Vol 97 (5) ◽  
pp. 562-565
Author(s):  
Cuibai Luo ◽  
Chen Wu
Keyword(s):  
Black Hole ◽  
Quantum Gravity ◽  
Noncommutative Geometry ◽  
Imaginary Part ◽  
Normal Modes ◽  
Space Time ◽  
Numerical Results ◽  
Schwarzschild Black Hole ◽  
Oscillation Frequencies ◽  
Noncommutative Parameter

Noncommutative geometry may be an alternative way to quantum gravity. We study the influence of the space–time noncommutative parameter on the Dirac quasi-normal modes in the noncommutative Schwarzschild black hole space–times. In comparison to the commutative Schwarzschild black hole, the numerical results show that the oscillation frequencies and magnitude of the imaginary part of the Dirac quasi-normal modes will increase. However, it is found that the influence of the space–time noncommutative parameter on the Dirac quasi-normal modes is tiny and negligible.

scholarly journals Resonant frequencies of a charged scalar field in the Garfinkle–Horowitz–Strominger dilaton black hole

2019 ◽  
Vol 28 (12) ◽  
pp. 1950151 ◽  
Author(s):  
H. S. Vieira ◽  
V. B. Bezerra ◽  
C. R. Muniz ◽  
M. S. Cunha
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Exact Analytical Solution ◽  
Charged Scalar ◽  
Resonant Frequencies ◽  
Massive Scalar Field ◽  
Black Hole Spacetime ◽  
Klein Gordon ◽  
Dilaton Black Hole ◽  
Physical Phenomena

We use the exact analytical solution of the radial part of the Klein–Gordon equation describing a charged massive scalar field in the electrically charged Garfinkle–Horowitz–Strominger dilaton black hole spacetime, given in terms of the confluent Heun functions, to study the physical phenomena related to resonant frequencies associated with this field, and also to examine some aspects related to its Hawking radiation. The special case of a Schwarzschild spacetime is also considered.

COMPUTING THE ENTROPY OF KERR–NEWMAN BLACK HOLE WITHOUT BRICK WALLS METHOD

2008 ◽  
Vol 23 (20) ◽  
pp. 3155-3163 ◽  
Author(s):  
LI-CHUN ZHANG ◽  
YUE-QIN WU ◽  
HUAI-FAN LI ◽  
ZHAO REN
Keyword(s):  
Black Hole ◽  
Event Horizon ◽  
Uncertainty Principle ◽  
Generalized Uncertainty Principle ◽  
Space Time ◽  
Quantum States ◽  
Brick Wall ◽  
Wall Model ◽  
Brick Wall Model ◽  
Newman Black Hole

By using the entanglement entropy method, the statistical entropy of the Bose and Fermi fields in a thin film is calculated and the Bekenstein–Hawking entropy of Kerr–Newman black hole is obtained. Here, the Bose and Fermi fields are entangled with the quantum states in Kerr–Newman black hole and are outside of the horizon. The divergence of brick-wall model is avoided without any cutoff by the new equation of state density obtained with the generalized uncertainty principle. The calculation implies that the high density quantum states near the event horizon are strongly correlated with the quantum states in black hole. The black hole entropy is a quantum effect. It is an intrinsic characteristic of space–time. The ultraviolet cutoff in the brick-wall model is unreasonable. The generalized uncertainty principle should be considered in the high energy quantum field near the event horizon. From the calculation, the constant λ introduced in the generalized uncertainty principle is related to polar angle θ in an axisymmetric space–time.

scholarly journals Geodesic motion of neutral particles around a Kerr–Newman black hole

2017 ◽  
Vol 34 (23) ◽  
pp. 235008 ◽  
Author(s):  
Chen-Yu Liu ◽  
Da-Shin Lee ◽  
Chi-Yong Lin
Keyword(s):  
Black Hole ◽  
Geodesic Motion ◽  
Neutral Particles ◽  
Newman Black Hole
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