On the Exponentially Large Probability of Transition through the Lavrelashvili-Rubakov-Tinyakov Wormhole

TL;DR

This paper demonstrates that the probability of transition through a specific wormhole model can be exponentially large, challenging the usual assumption of exponential suppression in such quantum gravitational processes.

Contribution

It shows that the action of the Lavrelashvili-Rubakov-Tinyakov wormhole can be made arbitrarily negative, leading to a non-exponentially suppressed transition probability.

Findings

Transition probability can be exponentially large.

Wormhole action can be arbitrarily negative.

Challenging the usual exponential suppression assumption.

Abstract

The model consisting of gravitational, scalar and axionic fields is considered. It is shown that the action of the Lavrelashvili-Rubakov-Tinyakov wormhole can be made arbitrarily negative by varying the parameters of the model. This means that semiclassically calculated probability of transition through this wormhole is not exponentially small (as usual) but exponentially large.