Hawking radiation in the presence of an invariant planck-scale cutoff
A disturbing point in the derivation of black hole radiance is the seemingly fundamental role of frequencies above (or distances below) the Planck scale. In this talk we argue that this is not necessarily the case if the question is presented in a covariant way. We show that Hawking radiation can be derived differently and in such a way that an invariant cutoff can be introduced to remove the trans-Planckian contributions in the calculations, which results in the well-known thermal spectrum plus small corrections. Copyright © 2012 by World Scientific Publishing Co. Pte. Ltd.