It might sound like gibberish to non-physicists, but it actually isn't. Eulerian energy is just the energy of something as observed by an eulerian observer, i.e

It might sound like gibberish to non-physicists, but it actually isn't. Eulerian energy is just the energy of something as observed by an eulerian observer, i.e. a normal observer traveling through spacetime (below the speed of light ofc). Solitons are just wave packets that keep their shape as they travel. None of the ideas presented here is new, not even the fact that these warp drives might work without negative energy. It's just a study of some more contrived geometries.