Journal
PHYSICS LETTERS B
Volume 634, Issue 5-6, Pages 541-544Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2006.01.028
Keywords
Hawking radiation; BTZ black hole; Bekenstein-Hawking entropy; quantum unitary theory; Painleve coordinates
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Hawking radiation can usefully be viewed as a semi-classical tunnelling process that originates at the black hole horizon. For the stationary axisymmetric BTZ black hole, a generalized Painleve coordinate system (Painleve-BTZ coordinates) is introduced, and Hawking radiation as tunnelling under the effect of self-gravitation is investigated. The corrected radiation is obtained which is not precise thermal spectrum. The result is consistent with the underlying unitary theory. Moreover. Bekenstein-Hawking entropy of BTZ black hole is not necessarily corrected when we choose appropriate coordinate system to study the tunnelling effect. (c) 2006 Elsevier B.V. All rights reserved.
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