Absorption cross section of a massive scalar field by a Reissner-Nordström black hole

2017 ◽  
Author(s):  
Carolina L. Benone ◽  
Ednilton S. de Oliveira ◽  
Luís C. B. Crispino ◽  
Sam R. Dolan
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Massive Scalar ◽  
Absorption Cross ◽  
Massive Scalar Field

scholarly journals ABSORPTION CROSS SECTION OF A RN BLACK HOLE

2009 ◽  
Vol 18 (01) ◽  
pp. 1-11 ◽  
Author(s):  
R. SINI ◽  
V. C. KURIAKOSE
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Event Horizon ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Hawking Temperature ◽  
Absorption Cross ◽  
Charged Scalar ◽  
Matter Waves ◽  
Charged Scalar Field

The behavior of a charged scalar field in the RN black hole space–time is studied using the WKB approximation. In the present work, it is assumed that matter waves can be reflected from the event horizon. Using this effect, the Hawking temperature and the absorption cross section for an RN black hole placed in a charged scalar field are calculated. The absorption cross section σabs is found to be inversely proportional to the square of the Hawking temperature of the black hole.

ABSORPTION CROSS-SECTION AND EMISSION SPECTRA OF SCHWARZSCHILD BLACK HOLE IN DIRAC FIELD

2008 ◽  
Vol 23 (33) ◽  
pp. 2867-2879 ◽  
Author(s):  
R. SINI ◽  
V. C. KURIAKOSE
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Emission Spectra ◽  
Dirac Field ◽  
Absorption Cross ◽  
Schwarzschild Black Hole ◽  
Matter Waves ◽  
Black Hole Spacetime

The behavior of a Dirac field in a Schwarzschild black hole spacetime is studied. In this work the Hawking temperature and the absorption cross-section for Schwarzschild black hole placed in Dirac field are calculated, taking into consideration the matter waves reflected from the event horizon. The absorption cross-section σ abs in Dirac field is found to be ⅛ of absorption cross-section in scalar field. The emission spectra of Schwarzschild black hole placed in an environment of Dirac field is also obtained.

scholarly journals SCATTERING OF SCALAR FIELD BY AN EXTENDED BLACK HOLE IN F(R) GRAVITY

2014 ◽  
Vol 29 (02) ◽  
pp. 1450005 ◽  
Author(s):  
SANEESH SEBASTIAN ◽  
V. C. KURIAKOSE
Keyword(s):  
Black Hole ◽  
Wave Function ◽  
Scalar Field ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Hawking Temperature ◽  
Wkb Method ◽  
Absorption Cross ◽  
Tunneling Method

In this work we have studied the scattering of scalar field around an extended black hole in F(R) gravity using WKB method. We have obtained the wave function in different regions such as near the horizon region, away from horizon and far away from horizon and the absorption cross-section are calculated. We find that the absorption cross-section is inversely proportional to the cube of Hawking temperature. We have also evaluated the Hawking temperature of the black hole via tunneling method.

scholarly journals COMMENTS ON ABSORPTION CROSS-SECTION FOR CHERN–SIMONS BLACK HOLES IN FIVE DIMENSIONS

2011 ◽  
Vol 26 (23) ◽  
pp. 3997-4008 ◽  
Author(s):  
P. A. GONZÁLEZ ◽  
JOEL SAAVEDRA
Keyword(s):  
Black Hole ◽  
Cross Section ◽  
Absorption Cross Section ◽  
Low Frequency ◽  
Absorption Cross ◽  
Black Hole Mass ◽  
Frequency Limit ◽  
Massive Scalar Field ◽  
Five Dimensions ◽  
Chern Simons

In this paper we study the effects of black hole mass on the absorption cross-section for a massive scalar field propagating in a five-dimensional topological Chern–Simons black hole at the low-frequency limit. We consider the two branches of black hole solutions (α = ±1) and we show that, if the mass of black hole increase the absorption cross-section decreases at the zero-frequency limit for the branch α = -1 and for the other branch, α = 1, the behavior is opposite, if the black hole mass increase the absorption cross-section increases. Also we find that beyond a certain frequency value, the mass black hole does not affect the absorption cross-section.

scholarly journals Entanglement of coupled massive scalar field in background of dilaton black hole

2009 ◽  
Vol 677 (3-4) ◽  
pp. 186-189 ◽  
Author(s):  
Jieci Wang ◽  
Qiyuan Pan ◽  
Songbai Chen ◽  
Jiliang Jing
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Massive Scalar ◽  
Massive Scalar Field ◽  
Dilaton Black Hole

scholarly journals Massive scalar field perturbation on Kerr black holes in dynamical Chern–Simons gravity

2021 ◽  
Vol 81 (5) ◽  
Author(s):  
Shao-Jun Zhang
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Scalar Field ◽  
Massive Scalar ◽  
Coupling Constant ◽  
Field Mass ◽  
Field Perturbation ◽  
Massive Scalar Field ◽  
Kerr Black Holes ◽  
Chern Simons

AbstractWe study massive scalar field perturbation on Kerr black holes in dynamical Chern–Simons gravity by performing a $$(2+1)$$ ( 2 + 1 ) -dimensional simulation. Object pictures of the wave dynamics in time domain are obtained. The tachyonic instability is found to always occur for any nonzero black hole spin and any scalar field mass as long as the coupling constant exceeds a critical value. The presence of the mass term suppresses or even quench the instability. The quantitative dependence of the onset of the tachyonic instability on the coupling constant, the scalar field mass and the black hole spin is given numerically.

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