Abstract
It is argued that a black hole can remain in thermal equilibrium with a heat bath even in the presence of particle interactions. This is achieved by proving the identity of the Hartle-Hawking Feynman propagator and a certain thermal Green's function.
- Received 1 December 1975
DOI:https://doi.org/10.1103/PhysRevLett.36.985
©1976 American Physical Society
