Feynman_Graphs.t8

% Feynman_Graphs.t8 -- generated from Feynman_Graphs.mp
\fmfL(200,-28.11844,t){$$}%
\fmfL(118.54903,100,r){$g$}%
\fmfL(200.00008,228.11844,b){$$}%
\fmfL(281.45097,100,l){$g$}%
\fmfL(16.15826,-14.90274,rt){$\mathbf {k}_{_4},\sigma $}%
\fmfL(16.15826,214.90274,rb){$\mathbf {k}_{_2},\sigma '$}%
\fmfL(383.84174,-14.90274,lt){$\mathbf {k}_{_1},\sigma $}%
\fmfL(383.84174,214.90274,lb){$\mathbf {k}_{_3},\sigma '$}%