# Gamma matrices

Dear All,

Could you pls remind me how do I decompose arbitrary 4x4 matrix into Dirac 16 matrices...

I ve forgotten.

Thank you

Dick
Homework Helper
If your unknown matrix is really a sum of gamma matrices you could try using the defining characteristic of the gamma matrices, {gamma_m,gamma_n}=2*g_mn. But not every 4x4 matrix is a sum of gamma matrices.

George Jones
Staff Emeritus