This talks about two bodies, but would the Halo Drive (https://arxiv.org/abs/1903.03423 https://arxiv.org/abs/1903.03423) also be one such thing? I mean, I gues

This talks about two bodies, but would the Halo Drive (https://arxiv.org/abs/1903.03423 https://arxiv.org/abs/1903.03423) also be one such thing? I mean, I guess the photons are the other bodies?