Dear List Members.
As is well known in QM, a rotation in space for a fermion requires
720 degrees to restore the sign of the De Broglie amplitude. For a vector
particle the sign is restored after 360 degree rotation. Is it correct to say
that for a spin 2 particle (Graviton) the sign is restored after 180 degrees
and then again at 360 degrees?
Any help on this would be appreciated.