More recently we have the work of Erik Lentz to make these viable with positive energy (a bunch of it AFAIR) using Solitons[0]. The funny thing is there's actu

More recently we have the work of Erik Lentz to make these viable with positive energy (a bunch of it AFAIR) using Solitons[0]. The funny thing is there's actually a TNG episode, New Ground, where the crew test a Soliton wave for warp propulsion. [0]: https://arxiv.org/abs/2201.00652 https://arxiv.org/abs/2201.00652