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

Abstract

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