0

I am new on Tikz-Feynman and I am trying to write all possible diagrams that I have studied. Currently, I am working on this diagram that comes from an effective field theory: the output are two straight and parallel lines, that exchange two other straight and parallel lines. I would like to insert another propagator in the middle but perpendicular, in order to have a H-shaped diagram, how can I do this? This is my code

\begin{equation}
\centering
\feynmandiagram[medium, layered layout, horizontal=a to b] {
i1 [particle]--  a-- b-- f1,
i2 [particle]--  c--  d-- f2 [particle],
{ [  same layer] a -- c },
{ [  same layer] b -- d},
};
\end{equation}
  • A picture of what you'd like to create would be helpful. I've given it my best guess below. – Steven Gardiner Jan 2 '18 at 13:23
1

You can get the perpendicular line by adding a third row in the middle and leaving the incoming and outgoing particle lines undrawn for that row:

H diagram

\begin{equation}
\centering
\feynmandiagram[medium, horizontal=a to b] {
i1 [particle]--  a -- b -- f1 [particle],
i3 --[draw=none]  c --  d --[draw=none] f3,
i2 [particle]--  e --  f -- f2 [particle],
a -- c -- e,
b -- d -- f,
};
\end{equation}

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.