Near-extremal and extremal charged black holes can be described by an effective metric built from the proper time of an infalling observer, with explicit consistency constraints on the deformation parameters.
Hawking radiation from extremal and non-extremal black holes
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
The relationship between Hawking radiation emitted by non extremal and extremal Reissner Nordstrom black holes is critically analyzed. A careful study of a series of regular collapsing geometries reveals that the stress energy tensor stays regular in the extremal limit and is smoothly connected to that of non extremal black holes. The unexpected feature is that the late time transients which played little role in the non extremal case are necessary to preserve the well defined character of the flux in the extremal case. The known singular behavior of the static energy density of extremal black holes is recovered from our series by neglecting these transients, when performing what turns out to be an illegitimate late time limit. Although our results are derived in two dimensional settings, we explain why they should also apply to higher dimensional black holes.
fields
gr-qc 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Effective Metric Description of Charged Black Holes
Near-extremal and extremal charged black holes can be described by an effective metric built from the proper time of an infalling observer, with explicit consistency constraints on the deformation parameters.