habe ein Problem mit dem Packet feynmf. Ich habe folgendes einfache Beispiel.
\documentclass{article} \usepackage{feynmf}%%%{feynmp} \unitlength=1mm \begin{document} \begin{fmffile}{fmftempl} \parbox{5cm}{\begin{fmfchar*}(40,25) \fmfleft{em,ep} \fmflabel{$e^+$}{ep} \fmflabel{$e^-$}{em} \fmf{fermion}{em,Zee,ep} \fmf{photon,label=$\gamma,,Z$}{Zee,Zff} \fmf{fermion}{fb,Zff,f} \fmfright{fb,f} \fmflabel{$\bar f'$}{fb} \fmflabel{$f$}{f} \fmfdot{Zee,Zff} \end{fmfchar*}} \end{fmffile} \begin{fmffile}{fmftemp2} \parbox{5cm}{\begin{fmfgraph}(40,25) \fmfforce{1/4w,1/2h}{v1} \fmfforce{1/8w,0h}{v2} \fmfforce{1/8w,1h}{v3} \fmf{fermion,right=3.0}{v3,v2} \fmf{plain,right=0.2}{v1,v3} \fmfdot{v1} \end{fmfgraph}} \end{fmffile} \end{document}
\parbox{5cm}{\begin{fmfgraph}(40,25) \fmfforce{1/4w,1/2h}{v1} \fmfforce{1/8w,0h}{v2} \fmfforce{1/8w,1h}{v3} \fmf{fermion,right=3.0}{v3,v2} \fmf{plain,right=0.2}{v1,v3} \fmfdot{v1} \end{fmfgraph}}
Wieso??????????????