Superradiance and black resonator strings encounter helical black strings
Superradiance and black resonator strings encounter helical black strings
We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity. The helical solution branches from the onset of the gravitational superradiant instability of the equal-spinning Myers-Perry black string. The isometry group of the helical black string is ℝ
T × U(1)
Z × SU(2), where the first two are helical isometries generated by linear combinations of time translation, shifts along the string, and rotation, each of which is individually broken by the superradiant instability. The helical black string is stationary, non-axisymmetric, and has nonzero horizon velocity despite the absence of momentum in the string direction. The entropy of the helical black string is higher than that of the Myers-Perry black string, but lower than cohomogeneity-2 “black resonator strings” (recently found) when the solutions overlap in the microcanonical ensemble. The entropy of the helical black string approaches zero when the horizon velocity along the string reaches its maximum given by the speed of light. Nevertheless, we find no evidence for the existence of regular horizonless solutions in this limit.
Black Holes, Classical Theories of Gravity
Dias, Óscar J.C.
f01a8d9b-9597-4c32-9226-53a6e5500a54
Ishii, Takaaki
26f373f6-a961-487a-a89b-7865c4e9e902
Murata, Keiju
9f530081-f9e5-4549-b376-6a898c1c9bbb
Santos, Jorge E.
6e5a1703-a14c-4ef6-bfe4-7e4c5177c274
Way, Benson
baebccc2-2305-40c2-bc63-ba6d74789068
5 May 2023
Dias, Óscar J.C.
f01a8d9b-9597-4c32-9226-53a6e5500a54
Ishii, Takaaki
26f373f6-a961-487a-a89b-7865c4e9e902
Murata, Keiju
9f530081-f9e5-4549-b376-6a898c1c9bbb
Santos, Jorge E.
6e5a1703-a14c-4ef6-bfe4-7e4c5177c274
Way, Benson
baebccc2-2305-40c2-bc63-ba6d74789068
Dias, Óscar J.C., Ishii, Takaaki, Murata, Keiju, Santos, Jorge E. and Way, Benson
(2023)
Superradiance and black resonator strings encounter helical black strings.
Journal of High Energy Physics, 2023 (5), [41].
(doi:10.1007/JHEP05(2023)041).
Abstract
We construct a cohomogeneity-1 helical black string in six-dimensional Einstein gravity. The helical solution branches from the onset of the gravitational superradiant instability of the equal-spinning Myers-Perry black string. The isometry group of the helical black string is ℝ
T × U(1)
Z × SU(2), where the first two are helical isometries generated by linear combinations of time translation, shifts along the string, and rotation, each of which is individually broken by the superradiant instability. The helical black string is stationary, non-axisymmetric, and has nonzero horizon velocity despite the absence of momentum in the string direction. The entropy of the helical black string is higher than that of the Myers-Perry black string, but lower than cohomogeneity-2 “black resonator strings” (recently found) when the solutions overlap in the microcanonical ensemble. The entropy of the helical black string approaches zero when the horizon velocity along the string reaches its maximum given by the speed of light. Nevertheless, we find no evidence for the existence of regular horizonless solutions in this limit.
Text
JHEP05(2023)041
- Version of Record
More information
Accepted/In Press date: 24 April 2023
Published date: 5 May 2023
Additional Information:
Publisher Copyright:
© 2023, The Author(s).
Keywords:
Black Holes, Classical Theories of Gravity
Identifiers
Local EPrints ID: 477718
URI: http://eprints.soton.ac.uk/id/eprint/477718
ISSN: 1126-6708
PURE UUID: a053f181-1b91-4475-895a-368a1ce13ac8
Catalogue record
Date deposited: 13 Jun 2023 17:16
Last modified: 17 Mar 2024 03:35
Export record
Altmetrics
Contributors
Author:
Takaaki Ishii
Author:
Keiju Murata
Author:
Jorge E. Santos
Author:
Benson Way
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics