Quantum wormholes

Abstract

The two-dimensional dilaton gravity model which is generalized to include a ghost Klein-Gordon field is semiclassically modified by adding local covariant terms of one-loop order. The black hole and the wormhole solutions are given in the semiclassically corrected model. When a static traversible wormhole is used to transport matter or radiation, the stability of the wormhole is shown in semiclassical theory: the wormhole starts radiating when the matter arrives and finally return to a static one. A bulk of the ingoing matter energy is radiated and the unradiated energy is used to change of throat radius of the final static wormhole.