Hawking radiation and ultraviolet regulators

Polchinski has argued that the prediction of Hawking radiation must be independent of the details of unknown high-energy physics because the calculation may be performed using "nice slices," for which the adiabatic theorem may be used. If this is so, then any calculation using a manifestly covariant—and so slice-independent—ultraviolet regularization must reproduce the standard Hawking result. We investigate the dependence of the Hawking …