title: Relationship between Hawking radiation and gravitational anomalies.
abstract: We show that in order to avoid a breakdown of general covariance at the quantum level the total flux in each outgoing partial wave of a quantum field in a black hole background must be equal to that of a (1+1)-dimensional blackbody at the Hawking temperature.
authors.affiliation: Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. spatrick@mit.edu
authors.forename: Sean P
authors.initials: SP
authors.lastname: Robinson
authors.forename: Frank
authors.initials: F
authors.lastname: Wilczek