scholarly journals The Klein–Gordon equation in the spacetime of a charged and rotating black hole

2014 ◽  
Vol 31 (4) ◽  
pp. 045003 ◽  
Author(s):  
V B Bezerra ◽  
H S Vieira ◽  
André A Costa



2001 ◽  
Vol 16 (11) ◽  
pp. 719-723 ◽  
Author(s):  
REN ZHAO ◽  
JUNFANG ZHANG ◽  
LICHUN ZHANG

Starting from the Klein–Gordon equation, we calculate the entropy of Schwarzschild–de Sitter black hole in non-thermal-equilibrium by using the improved brick-wall method-membrane model. When taking the proper cutoff in the obtained result, we obtain that both black hole's entropy and cosmic entropy are proportional to the areas of event horizon. We avoid the logarithmic term and stripped term in the original brick-wall method. It offers a new way of studying the entropy of the black hole in non-thermal-equilibrium.



1992 ◽  
Vol 45 (2) ◽  
pp. 532-533 ◽  
Author(s):  
Ibrahim Semiz




2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Saeedeh Sadeghian ◽  
Hovhannes Demirchian




Author(s):  
Aheibam Keshwarjit Singh ◽  
Irom Ablu Meitei ◽  
Telem Ibungochouba Singh ◽  
Kangujam Yugindro Singh


2012 ◽  
Vol 21 (02) ◽  
pp. 1250019
Author(s):  
JOSE L. MARTINEZ-MORALES

The Green function of the Klein–Gordon equation in black-hole coordinates is calculated. This function is a sum on the harmonic modes of the sphere. The first term is a double integration on the spectrum of energy, and the momentum of the particle. Far from the horizon, the double integration is approximated by an integration on a line defined by the relation of energy and momentum of a free particle. Assumptions of time-independence and radial symmetry are made.



2015 ◽  
Vol 3 (2) ◽  
pp. 53
Author(s):  
Chandra Rekha Mahanta ◽  
Rajesh Misra

<p>In this paper, the corrected Hawking temperature of (2+1) dimensional acoustic rotating black hole has been calculated by using tunneling method. For this purpose, the r-t sector of the metric is isolated from the angular part by taking a transformation of the time and the azimuthal angle co-ordinates in the exterior region of the event horizon. The massless particle of this black hole obeys the Klein- Gordon equation of motion.</p>



2021 ◽  
Vol 18 (02) ◽  
pp. 293-310
Author(s):  
Nicolas Besset ◽  
Dietrich Häfner

We show the existence of exponentially growing finite energy solutions for the charged Klein–Gordon equation on the De Sitter–Kerr–Newman metric for small charge and mass of the field and small angular momentum of the black hole. The mechanism behind is that the zero resonance that exists for zero charge, mass and angular momentum moves into the upper half plane.



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