Some experimentalists playing around with the Casimir effect (very real) which has to do with very close together things being pushed together while in a vacuum due to quantum effects of a vacuum found something in a simulation that looks quite like the toy solution that allows faster than light travel, involving things a few millionths of a meter across.
They figure you could actually build this contraption which is essentially just a little ball in a little tube and test its effects on electrons to confirm that they really can create tiny warp fields and study them… or they could have just made mistakes or found a way to invalidate some physics.
It doesnt seem like there’s a lot you could do with a micro scale warp field as the effect it relies on really depends on scale, but it is an interesting possibility.
Like most cases of “huh, that’s weird” it’s probably nothing, but it might be something, definitely worth the research funding to build the little device, but hold off on your vacation plans to Alpha Centauri.