scholarly journals Analytical result for the vacuum polarization of subtracted rotating black holes

2015 ◽  
Vol 92 (6) ◽  
Author(s):  
Mirjam Cvetič ◽  
Zain H. Saleem ◽  
Alejandro Satz
Keyword(s):  
Black Holes ◽  
Vacuum Polarization ◽  
Rotating Black Holes ◽  
Analytical Result

Vacuum polarization of massive fields near rotating black holes

1984 ◽  
Vol 29 (6) ◽  
pp. 1057-1066 ◽  
Author(s):  
V. P. Frolov ◽  
A. I. Zel'nikov
Keyword(s):  
Black Holes ◽  
Vacuum Polarization ◽  
Rotating Black Holes ◽  
Massive Fields

scholarly journals Renormalized vacuum polarization of rotating black holes

2015 ◽  
Vol 24 (09) ◽  
pp. 1542007 ◽  
Author(s):  
Hugo R. C. Ferreira
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Vacuum Polarization ◽  
Kerr Black Hole ◽  
Quantum Field ◽  
Massive Scalar Field ◽  
Rotating Black Hole ◽  
Black Hole Spacetimes ◽  
Rotating Black Holes ◽  
General Method

Quantum field theory on rotating black hole spacetimes is plagued with technical difficulties. Here, we describe a general method to renormalize and compute the vacuum polarization of a quantum field in the Hartle–Hawking state on rotating black holes. We exemplify the technique with a massive scalar field on the warped AdS3 black hole solution to topologically massive gravity, a deformation of (2 + 1)-dimensional Einstein gravity. We use a "quasi-Euclidean" technique, which generalizes the Euclidean techniques used for static spacetimes, and we subtract the divergences by matching to a sum over mode solutions on Minkowski spacetime. This allows us, for the first time, to have a general method to compute the renormalized vacuum polarization, for a given quantum state, on a rotating black hole, such as the physically relevant case of the Kerr black hole in four dimensions.

scholarly journals Black hole hair removal for N = 4 CHL models

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Subhroneel Chakrabarti ◽  
Suresh Govindarajan ◽  
P. Shanmugapriya ◽  
Yogesh K. Srivastava ◽  
Amitabh Virmani
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Degrees Of Freedom ◽  
Microscopic Analysis ◽  
Flat Space ◽  
Special Care ◽  
Hair Removal ◽  
Partition Functions ◽  
Rotating Black Holes

Abstract Although BMPV black holes in flat space and in Taub-NUT space have identical near-horizon geometries, they have different indices from the microscopic analysis. For K3 compactification of type IIB theory, Sen et al. in a series of papers identified that the key to resolving this puzzle is the black hole hair modes: smooth, normalisable, bosonic and fermionic degrees of freedom living outside the horizon. In this paper, we extend their study to N = 4 CHL orbifold models. For these models, the puzzle is more challenging due to the presence of the twisted sectors. We identify hair modes in the untwisted as well as twisted sectors. We show that after removing the contributions of the hair modes from the microscopic partition functions, the 4d and 5d horizon partition functions agree. Special care is taken to present details on the smoothness analysis of hair modes for rotating black holes, thereby filling an essential gap in the literature.

scholarly journals Rotating black holes in massive gravity

2014 ◽  
Vol 90 (8) ◽  
Author(s):  
Eugeny Babichev ◽  
Alessandro Fabbri
Keyword(s):  
Black Holes ◽  
Massive Gravity ◽  
Rotating Black Holes

scholarly journals Superradiance Resonance Cavity Outside Rapidly Rotating Black Holes

2000 ◽  
Vol 84 (20) ◽  
pp. 4537-4540 ◽  
Author(s):  
Nils Andersson ◽  
Kostas Glampedakis
Keyword(s):  
Black Holes ◽  
Rotating Black Holes ◽  
Resonance Cavity

scholarly journals Probing the universality of synchronised hair around rotating black holes with Q-clouds

2018 ◽  
Vol 779 ◽  
pp. 151-159 ◽  
Author(s):  
Carlos Herdeiro ◽  
Jutta Kunz ◽  
Eugen Radu ◽  
Bintoro Subagyo
Keyword(s):  
Black Holes ◽  
Rotating Black Holes
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