Thanks for the quick response Dr. Du. The anticommutator of gamma matrices is just $2 \eta^{\mu \nu} I_{4 \times 4}$, which hardly calls for new notation. One usually doesn't discuss commutators in relation to Clifford algebra, but I can't rule that out.
"Pauli matrices with two spacetime indices"
Hi all. This is my first post so forgive me if my latex doesn't show up correctly. I am familiar with defining a zeroth Pauli matrix as the 2x2 identity matrix to construct a four-vector of 2x2 matrices, $\sigma^\mu$. I'm trying to read a paper...