Doubled fermion or photon line

[Turgon-Aran-Gondolin]

I realize that for now the package contains a "double" type edge which is purely plain double line, but is there doubled fermion (with arrows) or doubled photon (i.e. graviton in corresponding EFT) line? If not, do you have plans on those?

[JP-Ellis]

The plain double line is actually from the underlying TikZ package, so TikZ-Feynman gets that for free. Unfortunately, it doesn't currently apply nicely to everything. I am intending to fix that soon-ish... when I have time.

[Turgon-Aran-Gondolin]

OK thanks. Looking forward to see that function come true. BTW I accidently opened another issue with exactly the same content, because of my crappy internet connection.... Sorry about that.

[Turgon-Aran-Gondolin]

What's the status of double fermion line now?

[GustavoHazel]

Hello, I was trying to draw a doubled fermion line, for instance a Rarita Schwinger line, and this can works [double distance=2pt, with arrow=0.7cm] as you put that instead of [double distance=2pt] or [fermion] in order to add an arrow

[lm2612]

Another option is to add this into the package:

\tikzfeynmanset{doublefermion/.style={ /tikz/double, /tikz/decoration={name=none}, /tikz/postaction={ /tikzfeynman/with arrow=0.5, } } }

\tikzfeynmanset{doubleantifermion/.style={ /tikz/double, /tikz/decoration={name=none}, /tikz/postaction={ /tikzfeynman/with reversed arrow=0.5, } } }