Wormholes with a warped extra dimension?

Understand

We investigate the role of a specifically warped extra dimension in constructing examples of higher dimensional spacetimes representing Lorentzian wormholes.

• The warping chosen is largely inspired by the well-known non-static Witten bubble of nothing, though our spacetimes are static and geometrically different.
• Vacuum solutions in $D\geq 5$ dimensions and others (non-asymptotically flat) with `perfectly normal' matter stress energy are interpreted as possible Lorentzian wormholes.
• Asymptotically flat wormholes in $D\geq 5$ with `exotic matter' and within this class of spacetimes also appear to exist in all dimensions.