Greybody Factors and Charges in Kerr/CFT
Mirjam Cvetic, Finn Larsen
TL;DR
This paper calculates greybody factors for near-extreme Kerr black holes with charges in four and five dimensions, exploring their CFT interpretation and showing that additional parameters can be integrated into Kerr/CFT correspondence.
Contribution
It extends Kerr/CFT analysis to include multiple charges and angular momenta, providing a more comprehensive understanding of black hole emission spectra.
Findings
Greybody factors computed for charged Kerr black holes in 4D and 5D.
CFT interpretation of emission amplitudes including parameter dependencies.
Central charge remains independent of U(1) charges.
Abstract
We compute greybody factors for near extreme Kerr black holes in D=4 and D=5. In D=4 we include four charges so that our solutions can be continuously deformed to the BPS limit. In D=5 we include two independent angular momenta so Left-Right symmetry is incorporated. We discuss the CFT interpretation of our emission amplitudes, including the overall frequency dependence and the dependence on all black hole parameters. We find that all additional parameters can be incorporated Kerr/CFT, with central charge independent of U(1) charges.
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