Black hole quantum tunnelling and black hole entropy correction

The Parikh-Wilczek tunnelling framework, which treats Hawking radiation as a tunnelling process, is investigated once more in this work. The first order correction, the log-corrected entropy-area relation, emerges naturally in the tunnelling picture if we consider the emission of a spherical shell. The second order correction to the emission rate for the Schwarzschild black hole is also Calculated. At this level, the entropy of the black hole will contain three parts: the usual Bekenstein-Hawking entropy, a logarithmic term and an inverse area term. We find that the coefficient of the logarithmic term is -1. Thus, apart from a coefficient, Our correction to the black hole entropy is consistent with that calculated in loop quantum gravity. (C) 2008 Elsevier B.V. All rights reserved.