Searching for higher dimensional wormholes with noncommutative geometry
  Noncommutative geometry, an offshoot of string theory, replaces point-like structures with smeared objects and has recently been extended to higher dimensions. The purpose of this letter is to obtain wormhole solutions with this extended noncommutative geometry as a background. It is found through this investigation that wormhole solutions exist in the usual four, as well as in five dimensions, but they do not exist in higher-dimensional spacetimes. 
Farook Rahaman, P. K. F. Kuhfittig, Saibal Ray and Safiqul Islam
gr-qc