Failure of standard thermodynamics in planck scale black hole system

The final stage of the black hole evaporation is a matter of debates in the existing literature. In this paper, we consider this problem within two alternative approaches: noncommutative geometry (NCG) and the generalized uncertainty principle (GUP). We compare the results of two scenarios to find a relation between parameters of these approaches. Our results show some extraordinary thermodynamical behavior for Planck size black hole evaporation. These extraordinary behavior may reflect the need for a fractal non-extensive thermodynamics for Planck size black hole evaporation process. (C) 2007 Elsevier Ltd. All rights reserved.