User blog comment:Interdimensional403/FTL possible sort of I guess.../@comment-1743498-20130508015612/@comment-2001921-20130508070926

They're not trying to make one per se; they're simulating the effects of a warp bubble in other media in the same way black holes are modelled in crystals and such. Seeing as there's no reason to think negative matter exists or practical warp bubbles are possible it'd be pretty hard for them to make one. :P

Honestly wormholes are more plausible.