Wormholes in vacuum Brans-Dicke theory

TL;DR

This paper identifies the specific class of vacuum Brans-Dicke solutions that form physically viable traversable wormholes, and examines their potential for interstellar travel.

Contribution

It demonstrates that only Brans Class I solutions with certain coupling constants produce realistic traversable wormholes in vacuum Brans-Dicke theory.

Findings

Brans Class I solutions with ω < -1.5 are physically viable wormholes.

The geometry of these wormholes can potentially be used for interstellar travel.

Other classes do not produce viable wormhole geometries.

Abstract

It is shown that among the different classes of claimed static wormhole solutions of the vacuum Brans-Dicke theory only Brans Class I solution with coupling constant $\omega$ less than -1.5 (excluding the point $\omega =2$) gives rise to physically viable traversable wormhole geometry. Usability of this wormhole geometry for interstellar travel has been examined.