In other news…
It’s a nice piece of speculative work, but it is speculationMatt Visser, quoted in Stellar Wormholes May Exist [seeker.com] on Seeker
… is scientist speak for “that’s bullshit, what’s this guy smoking?”
Of course hindsight is 20/20.
Also, if memory serves, that’s a key plot element of The Algebraist [wikipedia.org].