Scalar multi-wormholes

Understand

In 1921 Bach and Weyl derived the method of superposition to construct new axially symmetric vacuum solutions of General Relativity.

• In this paper we extend the Bach-Weyl approach to non-vacuum configurations with massless scalar fields.
• Considering a phantom scalar field with the negative kinetic energy, we construct a multi-wormhole solution describing an axially symmetric superposition of $N$ wormholes.
• The solution found is static, everywhere regular and has no event horizons.