An Effective Field Theory of Quantum Black Hole Horizons

An Effective Field Theory of Quantum Black Hole Horizons - Walter Goldberger

Walter Goldberger
Yale University
February 10, 2020
I develop an effective theory which describes black holes with quantum
mechanical horizons that is valid at scales long compared to the
Schwarzschild radius but short compared to the lifetime of the black
hole. The formalism allows one to calculate the quantum mechanical
effects in scattering processes involving black hole asymptotic states.
The EFT Wightman functions which describe Hawking radiation in the Unruh
vacuum are not Planck suppressed and are actually enhanced relative to
those in the Boulware vacuum, for which such radiation is absent. We
elaborate on this point showing how the non-Planck suppressed effects of
Hawking radiation cancel in classical observables. Applications to
inelastic gravitational scattering of point particles off quantum black
holes will be briefly discussed.