In The Expanse, spacecraft use magical technology called Epstein Drives to travel at constant 1g acceleration (and deceleration), subject to real world physical constraints. This is in contrast to the current approach of traveling at essentially 0g (between maneuvers).
I understand that the current approach results in travel paths that are essentially (solar) orbits (at least for interplanetary distances); and I understand basically what constraints that places on what travel paths must look like.
Since these (real world) constraints apply to the in-world physics of flight paths in The Expanse, I wonder what real world physics has to say about what flight paths in The Expanse look like.
All I've found is one relatively old and unhelpful post on Physics SE. But it's unclear from that whether it resents a general form for travel paths.