A Note on Vacuum Polarisation and Hawking Radiation
arXiv:1205.3805
Abstract
We re-examine vacuum polarisation of a scalar field in a quasi-local volume including the horizon. We find that Hawking radiation rate is derived as a pure decay of vacuum due to scalar field interaction with classical gravity exactly in the same way as the origin of vacuum polarisation effect in Electrodynamics.
11 pages, 2 figures