>>12255497>Would that mean that the D-branes correspond to the gauge fields?they are closely related—D branes basically can be used to generate gauge theories, but e.g. in that article the “leptonic branes” are doing something with the spinor fields as opposed to just the gauge fields so it’s more general.
> the version of kaluza klein that was explained to me was that point particles looping around a compactified dimension would appear to a macroscopic observer as if they had an electric charge, My brain sort of converted the particle's circuitous path to a string whose looping number corresponded to the momentum of the particle, but since I'm just an enthusiast I wasn't sure if that's a correct way of picturing itthe picture in string theory is different from the original KK theory. the string moving around or winding around the extra dimensions (sort of equivalent by T-duality) give different properties, like mass and spin and charge, but these higher KK modes are not relevant to low energy physics. the brane setup is what is important for low energy phenomenology. there is one example that is relevant to actual physics though. black holes are particular string states with very large windings which determine their mass, charge, and angular momentum. but aside from black holes, all the particles of the SM are not an excited KK mode
