Thank you very much for your reply.
Here I mean that for the massless case p_{\mu}=(E,0,0,E) the algebra yields \{Q_{a},\bar{Q}_{\dot{b}}\}=2(\sigma^{\mu})_{a\dot{b}}P_{\mu}=2E(\sigma^0+\sigma^3)_{a\dot{b}}={\left(\begin{array}{cc} 1 &0 \\ 0 &0 \end{array}\right)_{a\dot{b}}} implying that...
Hi,
I have a conceptual problem in understanding the SUSY (N=1) massless supermultiplet.
Using appropriately normalized creation and annihilation operators Q, Q+ (only one component survives in this representation) we have for the quark state:
Q+|p,-1/2>=0 (quark) where the 1/2 labels the...