Tides and energy conditions in Einstein-Gauss-Bonnet thin-shell wormholes

TL;DR

This paper investigates five-dimensional Einstein-Gauss-Bonnet thin-shell wormholes, demonstrating that they can be supported by non-exotic matter and free from traversability issues related to radial tides through specific parameter choices.

Contribution

It presents a novel construction of thin-shell wormholes in Einstein-Gauss-Bonnet gravity that satisfy energy conditions and avoid tidal problems, expanding the understanding of feasible wormhole models.

Findings

Wormholes supported by non-exotic matter are possible.

Suitable parameters can eliminate strong radial tide issues.

The geometry remains well-behaved throughout spacetime.

Abstract

In this article we study spherical thin-shell wormholes in five-dimensional Einstein-Gauss-Bonnet gravity. We show that configurations supported by non-exotic matter, that is matter satisfying the weak energy condition, are possible at the same time that traversability problems associated with strong radial tides at the throat can be avoided when suitable values of the parameters are adopted. Our construction is performed in such a way that it also allows for the admissible behaviour of the geometry in the whole spacetime.