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

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

2010-07-27

arxiv.org/abs/1007.4627v3

Class.Quant.Grav.28:025004,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 6 figures. Dedicated to the memory of Rev. Ibrahim Eken (1927-2010) of Turkey

Scientific paper

10.1088/0264-9381/28/2/025004

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.

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