Ughh...the term B-field already has a very strong association with magnetic fields. I'm sure it sounded like a good name given the context, but these types of name-collisions generally makes searching for a specific topic more and more painful each year.
Old terms age out too, so it's not that bad. In the context of ML, for example, "generative models" meant something else twenty years ago. Nobody who's got into ML recently would even know what the old meaning is.
