Journal
PHYSICS LETTERS B
Volume 618, Issue 1-4, Pages 14-22Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2005.05.024
Keywords
black hole; hawking radiation; quantum theory
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A simple coordinate system of Kerr-Newman space-time is introduced. The new coordinates have several attractive properties: the time direction is a Killing vector, the metric is smooth at the horizons, constant-time slices are just flat Euclidean space in radial and satisfy Landau's condition of clock synchronization. The usefulness of the coordinates is demonstrated by calculating the rate at which uncharged particles tunnel across the event horizon. When self-gravitation is taken into account, the radiation deviates from precisely thermal spectrum. The corrected spectrum is consistent with an underlying unitary theory. (c) 2005 Elsevier B.V. All rights reserved.
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