I know that quantum-spin is not equivalent to the spinning of a classical object about an axis passing through it, although there are some similarities.
I also know that spin naturally emerges out of Dirac's equation which was the first equation to incorporate both special relativity and quantum physics. So I was thinking is it possible to develop a different analogy for quantum-spin in terms of classical theories of rotation and special relativity.
Does anyone know of any attempts in this area?