Addendum to "Thin-shell wormholes supported by ordinary matter in Einstein-Gauss-Bonnet gravity"

TL;DR

This paper demonstrates that thin-shell wormholes supported by matter satisfying energy conditions can exist in Einstein-Gauss-Bonnet gravity, specifically in the exotic branch of Wiltshire solutions with small positive Gauss-Bonnet parameters.

Contribution

It shows the existence of energy-condition-satisfying matter supporting thin-shell wormholes in the exotic branch of Einstein-Gauss-Bonnet gravity, expanding previous results.

Findings

Wormholes supported by ordinary matter are possible in the exotic branch.

Energy conditions are satisfied for small positive Gauss-Bonnet parameters.

Results differ from those in the normal branch of Wiltshire solutions.

Abstract

Thin-shell wormholes are constructed starting from the exotic branch of Wiltshire spherically symmetric solution of Einstein-Gauss-Bonnet gravity. The energy-momentum tensor of the shell is studied, and it is shown that configurations supported by matter satisfying the energy conditions exist for certain values of the parameters. Differing from the previous result associated to the normal branch of Wiltshire solution, this is achieved for small positive values of the Gauss-Bonnet parameter and for vanishing charge.