Three-Dimensional Black Holes and String Theory
D. Birmingham (University College Dublin) I. Sachs (DIAS) S. Sen, (Trinity College Dublin)
TL;DR
This paper calculates the decay rate of scalar fields emitted by 2+1 dimensional black holes, linking the results to conformal field theory and revealing the roles of left and right-moving sectors.
Contribution
It provides an exact decay rate for massless scalar emission from non-extremal 2+1D black holes and connects it with conformal field theory descriptions.
Findings
Decay rate matches conformal field theory predictions at low energy.
Left and right sectors of CFT correspond to black hole temperatures.
Results support the CFT description of black hole radiation.
Abstract
The exact decay rate for emission of massless minimally coupled scalar fields by a non-extremal black hole in 2+1 dimensions is obtained. At low energy, the decay rate into scalars with zero angular momentum is correctly reproduced within conformal field theory. The conformal field theory has both left- and right-moving sectors and their contribution to the decay rate is associated naturally with left and right temperatures of the black hole.
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