Higher dimensional thin-shell wormholes in Einstein-Yang-Mills-Gauss-Bonnet gravity

TL;DR

This paper constructs and analyzes higher-dimensional thin-shell wormholes within Einstein-Yang-Mills-Gauss-Bonnet gravity, demonstrating their stability and the conditions under which they can be supported by normal matter.

Contribution

It provides explicit solutions for stable higher-dimensional wormholes in EYMGB theory, including conditions for non-exotic matter support, and separates cases for different dimensions.

Findings

Stable wormholes are possible with negative Gauss-Bonnet parameter.

Surface energy-momentum can support wormhole stability against perturbations.

Normal matter satisfying energy conditions can support these wormholes in certain cases.

Abstract

We present thin-shell wormhole solutions in Einstein-Yang-Mills-Gauss-Bonnet (EYMGB) theory in higher dimensions d\geq5. Exact black hole solutions are employed for this purpose where the radius of thin-shell lies outside the event horizon. For some reasons the cases d=5 and d>5 are treated separately. The surface energy-momentum of the thin-shell creates surface pressures to resist against collapse and rendering stable wormholes possible. We test the stability of the wormholes against spherical perturbations through a linear energy-pressure relation and plot stability regions. Apart from this restricted stability we investigate the possibility of normal (i.e. non-exotic) matter which satisfies the energy conditions. For negative values of the Gauss-Bonnet (GB) parameter we obtain such physical wormholes.