# Spinor representations

1. Nov 4, 2014

### gentsagree

Can you give me an intuitive understanding of the following:

"The spin states of massive and massless Majorana spinors transform in representations of SO(D-1) and SO(D-2), respectively".

I see the similarity with vectors bosons, where massive vectors have d-1 degrees of freedom and massless have d-2, but what exactly is meant by "the spin states of (...) Majorana spinors transform"?

2. Nov 9, 2014