Macroscopic wormholes in noncommutative geometry

TL;DR

This paper demonstrates that noncommutative geometry allows for macroscopic wormholes that violate energy conditions without exotic matter, are safe for travelers, and are stable under certain perturbations.

Contribution

It shows that noncommutative geometry enables macroscopic, stable wormholes with zero tidal forces, avoiding the need for exotic matter.

Findings

Wormholes can be macroscopic in noncommutative geometry.

Violation of energy conditions is due to geometry, not exotic matter.

Wormholes are stable under linearized radial perturbations.

Abstract

The purpose of this paper is to show that wormholes in noncommutative geometry can be macroscopic, based in part on an earlier study. The necessary violation of the weak energy condition is attributable to the noncommutative-geometry background rather than to the use of "exotic matter." The zero tidal forces make the wormhole suitable for humanoid travelers. Also discussed is the stability to linearized radial perturbations.