Defect wormhole: A traversable wormhole without exotic matter

TL;DR

This paper proposes a new traversable wormhole solution within General Relativity that does not require exotic matter, instead utilizing a spacetime defect characterized by a vanishing metric determinant.

Contribution

It introduces a novel wormhole model based on a spacetime defect, eliminating the need for exotic matter traditionally required for traversable wormholes.

Findings

Wormhole solution without exotic matter

Relies on a spacetime defect with vanishing metric determinant

Potential implications for realistic wormhole construction

Abstract

We present a traversable-wormhole solution of the gravitational field equation of General Relativity without need of exotic matter (exotic matter can, for example, have negative energy density and vanishing isotropic pressure). Instead of exotic matter, the solution relies on a 3-dimensional "spacetime defect" characterized by a locally vanishing metric determinant.