The concept of a warp drive has been the stuff of science fiction for the longest time.. But all that is changing with the Alcubierre Drive. In 2000 Alcubierre posted the first paper on the matter and it's been an active area of research ever since. The Alcubierre (or "warp drive") metric is usually discussed in the context of an ADM formalism.
I spend a lot of time scanning through the postings on arXiv and every once in a while I stumble on a really nice paper. This one caught my eye today: Did a 1-dimensional magnet detect a 248-dimensional Lie algebra?