Hello, I read in an article that in GR it is possible to use a connection with torsion to model ponctual particle with spin. The connection can be decomposed in a curvatue part and a torsion part. In an other part, we know that the invariance under pointcarré group imply conservation of spin of particle. Can i conclude with a lot of prudence that a particle with spin is a exitation of the connection in GR ? I say this because boson are quantification of field that is, for yang mills theory, the value of the connection. Thanks.