Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-02-07
Commun.Theor.Phys.47:835-842,2007
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, V2: various modifications throughout the text, plus a lot of newly added references
Scientific paper
10.1088/0253-6102/47/5/014
Hawking radiation of black ring solutions to 5-dimensional Einstein-Maxwell-dilaton gravity theory is analyzed by use of the Parikh-Wilczek tunnelling method. To get the correct tunnelling amplitude and emission rate, we adopted and developed the Angheben-Nadalini-Vanzo-Zerbini covariant approach to cover the effects of rotation and electronic discharge all at once, and the effect of back reaction is also taken into account. This constitute a unified approach to the tunnelling problem. Provided the first law of thermodynamics for black rings holds, the emission rate is proportional to the exponential of the change of Bekenstein-Hawking entropy. Explicit calculation for black ring temperatures agree exactly with the results obtained via the classical surface gravity method and the quasilocal formalism.
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