Traversable wormholes: Some simple examples

TL;DR

This paper presents simple, non-spherically symmetric traversable wormhole examples that minimize exotic matter use, allowing travelers to pass without entering regions of exotic matter, while still violating the weak energy condition.

Contribution

It introduces novel traversable wormhole models that are less symmetric and require less exotic matter than previous examples.

Findings

Wormholes can be constructed with reduced exotic matter.

Travelers can traverse without passing through exotic matter regions.

Weak energy condition remains violated in these models.

Abstract

Building on the work of Morris, Thorne, and Yurtsever, some particularly simple examples of traversable wormholes are exhibited. These examples are notable both because the analysis is not limited to spherically symmetric cases, and because it is possible to in some sense minimize the use of exotic matter. In particular, it is possible for a traveller to traverse such a wormhole without passing through a region of exotic matter. As in previous analyses, the weak energy condition is violated in these traversable wormholes.