Hi, I am trying to understand quantum description of electron in B field. What I am looking for is how to relate quantum and classical view? If in classical treatment electron comes in homogeneous B field, it will go in circular motion around magnetic field lines, with radius R. From quantum view, we get LHO and quantization of energy. From equation for energy we see that only in z direction (direction along B field) we have dispersion relation for a free electron. That is fine with classical result. What I cannot see from quantum description, are there orbits around magnetic field lines. Did anyone thought about this, and is there some clear picture about this view? If electrons are orbiting around B lines, I suppose that radius is quantized? Am I right or wrong?