Hi, everyone.
I have a question: why we can say a spinor be a representation of SU(2)?
As far as I know, the linear representation of groups would be matrix, I mean, we could consider these matrix as elements of a group, the matrix multiplication rules as the group operator, however, a spinor is something more like a vector.
Another question is when we say some particles are scalars, vectors, spinors, how do we classified them? Just depend on their Spins, or i.e. inner rotation momentum?
Any answers or suggestions of each of the two questions is very appreciated. Thanks ahead. |
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