Construction and enlargement of dilatonic wormholes by impulsive radiation

TL;DR

This paper explores how impulsive radiation can dynamically construct and modify traversable wormholes within a dilaton gravity model, providing insights into potential methods for wormhole manipulation.

Contribution

It introduces exact solutions demonstrating the construction and enlargement of wormholes via impulsive radiation, offering a simplified model for similar processes in Einstein gravity.

Findings

Wormholes can be constructed from black holes using impulsive radiation.

Throat size of wormholes can be stably enlarged or reduced.

Solutions are analytically tractable within the dilaton gravity framework.

Abstract

The dynamical behavior of traversable wormholes and black holes under impulsive radiation is studied in an exactly soluble dilaton gravity model. Simple solutions are presented where a traversable wormhole is constructed from a black hole, or the throat of a wormhole is stably enlarged or reduced. These solutions illustrate the basic operating principles needed to construct similar analytic solutions in full Einstein gravity.