Naritaka Oshita (University of Tokyo and Research Center for the Early Universe) “Thermal creation of an inflationary universe out of an evaporating black hole”

Seminar Organizer

Abstract:
We discuss a two-step mechanism to create a new inflationary domain
beyond a wormhole throat which is created by a phase transition around
an evaporating black hole. The first step is creation of a false vacuum
bubble with a thin-wall boundary by the thermal effects of Hawking
radiation around an evaporating black hole. Then this wall induces
a quantum tunneling to create a wormhole-like configuration.
As the space beyond the wormhole throat can expand exponentially,
being filled with false vacuum energy, this may be interpreted as
creation of another inflationary universe in the final stage of the black
hole evaporation.