Wormholes in Dilatonic Einstein-Gauss-Bonnet Theory
  We construct traversable wormholes in dilatonic Einstein-Gauss-Bonnet theory in four spacetime dimensions, without needing any form of exotic matter. We determine their domain of existence, and show that these wormholes satisfy a generalised Smarr relation. We demonstrate linear stability with respect to radial perturbations for a subset of these wormholes. 
Panagiota Kanti, Burkhard Kleihaus, Jutta Kunz
gr-qc astro-ph.CO hep-th