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Questions tagged [feynmp]

{feynmp} is about the `feynmf` or `feynmp` packages for Feynman diagrams.

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How can i do this Feynman diagram?

I just started using the feynmp package and i'm trying to draw a feynman diagram like this (sorry for the bad drawing). Basically its supposed to be a photon being emmited and absorved again. However,...
João Santos's user avatar
4 votes
1 answer
230 views

Writing equation at right of image

I want to write an equivalent expression correspond to an image. A representative image should look like So far I tried \begin{wrapfigure}{l}{0.25\textwidth} \scalebox{0.4}{ \begin{tikzpicture} ...
Tanmoy Pati's user avatar
1 vote
0 answers
49 views

Momentum labels in feynmp package

I'm trying to draw a simple Feynman diagram and momentum labels aren't showing, I don't know why, even when I've checked everything and it seems okay. This is the piece of code where the problem is \...
Davizon's user avatar
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1 answer
125 views

Centering a Tikz Feynman diagram in the standalone document

I would like to position the Feynman diagram at the center of the page and have it spread out. The code for the diagram is provided below. Could you please guide me on how to achieve this? \...
PoreyS's user avatar
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1 answer
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Different sizes printed for Feynman diagrams

When compiling the following: % !TeX program = xelatex \documentclass{standalone} \usepackage[force]{feynmp-auto} \DeclareGraphicsRule{*}{mps}{*}{} % for being able to read the produced file \begin{...
M91's user avatar
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feynmp for mixing vertex between two photons

I'm trying to draw a feynman diagram like the one in the picture in latexit, but currently it doesn't output anything at all. Can someone help? \documentclass[10pt]{article} \usepackage[usenames]{...
Beth Long's user avatar
  • 297
1 vote
1 answer
97 views

Horizontal alignment of feynmp-graphs in equations

I have a hard time aligning diagrams in equations where everything fits on the same line: As you can see the + is not aligned with the external lines. Here is the code % !TeX program = xelatex \...
M91's user avatar
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1 vote
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Blank output using feynmp package [duplicate]

Using all the code of feynmp package in my recent distribuition of MikTeX for W10 I have not see nothing. Why? \documentclass{article} \usepackage[utf8]{inputenc} \usepackage{feynmp} \begin{document} \...
Sebastiano's user avatar
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3 votes
1 answer
124 views

Tikz picture (arc) cant be positioned

I am trying to put an arc done with Tikz (representing a current) with a Feynman Diagram (done with feynmp), but even if a try changing the coordinates of the Tikz picture it wont change. My code is ...
Gabriel Vian's user avatar
0 votes
0 answers
59 views

How to draw a Feynman Diagram with current j (feynMP)

I know how to create this diagram, but I dont know how to add the currents (j1 and j2). Here is my code, I got it from https://wiki.physik.uzh.ch/cms/latex:feynman \documentclass[10pt,a4paper]{article}...
Gabriel Vian's user avatar
1 vote
1 answer
303 views

How to create Feyman Diagrams with feynmp?

I'm never used this package and I dont know how to use it to draw the diagramas. Tried to draw some examples I found, but they dont even apear on my pdf file. I saw on other forums that I had to run a ...
Gabriel Vian's user avatar
0 votes
0 answers
181 views

How can I draw a momentum arrow in feynmf?

My question is similar to the one from this post: How does one draw a momentum arrow along a line in feynmf?. However, I want to know if it is possible to draw a momentum arrow along a line using the ...
jmaguire's user avatar
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1 answer
322 views

Using feynmp in overleaf

I'm trying to create this diagram in overleaf: I can create this on texstudio by using the package feynmp, the code is as follows: \begin{fmffile}{diagram} \begin{fmfgraph*}(100,50) \fmfcmd{ ...
Edbroad123's user avatar
3 votes
1 answer
163 views

Operator matrix element Feynman diagrams

I am trying to draw the following cutted diagram but I don't know how to do it. I am using feynmf for the Feynman diagrams for my thesis since tikz-feynman requires lualatex and it gives enormous ...
Davide Morgante's user avatar
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1 answer
277 views

Empty or not-compilable diagram using feynmf/feynmp package

Strangely today I wanted to create a graph with feynmf/feynmp package but taking for example the @egreg's answers here I not see nothing (I compile with TeXworks). Does this anomaly happen only to me?...
Sebastiano's user avatar
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2 votes
2 answers
252 views

How to change the arrow-head size in `feynmp`

Consider the following MWE \documentclass[11pt]{article} \usepackage{feynmp-auto} \begin{document} \begin{fmffile}{afilename} \setlength{\unitlength}{0.1cm} \begin{fmfgraph}(40,25) \fmfleftn{i}{...
Sito's user avatar
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3 votes
1 answer
263 views

Vertical alignment of feynmp-graphs in equations

I find myself often in the situation where I have to arrange graphs generated with feynmp in equations. This works usually fine, but I have to play around with the space, i.e. I need to add some at ...
Sito's user avatar
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1 vote
1 answer
149 views

Kaon decay diagram alignment feynmf

I was trying to typset the following penguin diagram with Feynmf and I've got it pretty close with the following code \begin{fmffile}{Kaone} \begin{equation} \begin{fmfgraph*}(175,...
Davide Morgante's user avatar
1 vote
2 answers
186 views

External vertex label placement in feynmp

I want to draw a simple e+e- -> 2 gamma feynman diagram using feynmp and I want the external vertex labels to be very close to the edges of the lines because I'm low on space. I know that: ...
Beth Long's user avatar
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1 answer
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Equation graph using feyn package

Starting from this question with the picture Is it possible with this MWE to create the connectivity graph into the math equation using feyn package? \documentclass[a4paper,12pt]{article} \...
Sebastiano's user avatar
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0 answers
125 views

Cannot get Feynmp to work in LaTeXiT

In trying to use feynmp to draw Feynman diagrams in LaTeXiT, I followed the instructions at http://osksn2.hep.sci.osaka-u.ac.jp/~taku/osx/feynmp_latexit.html and found it runs with no errors but does ...
pion's user avatar
  • 11
2 votes
1 answer
72 views

How to add space at vertex in `feynmp`

Is there a way to reproduce the following Feynman-diagrams using the 'feynmp' package? The following code \documentclass{article} \usepackage{geometry} \usepackage[utf8]{inputenc} \usepackage{...
Sito's user avatar
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1 vote
0 answers
196 views

Tensor symbol as vertex in feynmp

Consider the following example \documentclass{memoir} \usepackage[margin=0.05cm]{geometry} \usepackage[force]{feynmp-auto} \usepackage{amsmath} \begin{document} \setlength{\unitlength}{.09cm} \begin{...
Sito's user avatar
  • 681
1 vote
0 answers
110 views

How to define a custom decoration shape in FeynMF?

FeynMF comes with pre-defined decoration shapes (circle, square, triangle, etc.) used for vertices. However I need decoration shapes that are semicircles (oriented to look like a D and mirror image of ...
pion's user avatar
  • 11
0 votes
4 answers
937 views

Drawing feynman diagram with Feynmf

I'm trying to create the diagram below using the feynmf package, but I'm extremely inexpert and I don't know where to start to create the two protons that enter the blob. Im happy for the two blue ...
Beth Long's user avatar
  • 297
1 vote
3 answers
262 views

Equal length to vertices in feynmf

I want to draw the following feynman diagram using feynmf: I'm happy for the solid blue line to be replaced by a dashed line, but I can't for the life of me work out how to get everything looking ...
Beth Long's user avatar
  • 297
1 vote
4 answers
526 views

Use Feynmp to create feynman diagram in LaTeXiT

I want to create a Feynman diagram using LaTeXiT. I have followed the instructions here http://osksn2.hep.sci.osaka-u.ac.jp/~taku/osx/feynmp.html to install feynmp and the instructions here http://...
Beth Long's user avatar
  • 297
-1 votes
1 answer
401 views

How to draw vertex function Feynman diagram

I would like to draw the following Feynman diagram in LaTeX (Overleaf). I don't have any back ground with packages such as tikz-feynman or tikz etc... Please help me to draw the following diagram.
ROBIN RAJ's user avatar
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2 votes
1 answer
221 views

Feynman diagrams: curved arrow to use into feyn package

I wanted to draw the same figure of this question Hartree Fock Feynman diagrams using feyn package: The curved arrow are specific of feynmp package for me complicated because I have not understood ...
Sebastiano's user avatar
  • 56.5k
2 votes
2 answers
266 views

Fixing arrows details on Feynman diagram

I'm trying to make a (simple?) Feynman diagram, but there are some details that are bugging me. In particular, the labels of the lines and the labels of the arrows are of different sizes, and the p'/k'...
Mauro Giliberti's user avatar
0 votes
2 answers
450 views

Photon selfenergy diagram in LaTeX

I am typing my project using LaTeX, I need to insert a photon self-energy diagram with symmetric moments in centre alignment This is what I need: Please help me...
ROBIN RAJ's user avatar
  • 231
1 vote
2 answers
182 views

Shifted vpaths are cropped in feynmp

I am trying to draw a Feynman diagram by the feynmp package and LaTeXiT. But shifted vpaths are cropped in the generated image as shown in the attached. This example was working OK with my previous ...
Akira Okumura's user avatar
3 votes
2 answers
2k views

Creating Feynman Diagrams With Usepackage feynmf

Here is a MWE (minimal-working example): \documentclass{article} \usepackage[utf8]{inputenc} \usepackage{feynmf} \begin{document} \begin{fmffile}{diagram} \noindent Here is a simple Feynman diagram: ...
Anonymous5638's user avatar
2 votes
1 answer
79 views

Figures in opposite order than they're placed

I'm attempting to place two feynman diagrams using feynmp in the figure environment so they can have a caption and their numbering is the same as other figures. However doing so they come out in the ...
Jack's user avatar
  • 185
0 votes
1 answer
511 views

Position label above vertex feynmp 4 fermion interaction

I am trying to produce a Feynman diagram that is simply 2 incoming fermions meet at a vertex v1, with 2 outgoing fermions. I wish to put a label on the vertex, above the vertex. However feynmp by ...
Jack's user avatar
  • 185
0 votes
0 answers
108 views

Weird behaviour of feynmp when using with minipages

I am using the feynmp-auto with the subcaption package. I have a figure with four identical Feynman diagrams produced with \begin{figure}[H] % Do not use only [h] in real documents. \begin{minipage}[...
Mark's user avatar
  • 214
0 votes
0 answers
43 views

Is there any way to delete previously defined vertices in feynmf?

I'm trying to create feynman diagrams programmatically, and frequently require the need to remove individual vertices that were previously created with the fmfn or fmfcyclen commands. This is so that ...
user1247's user avatar
  • 145
2 votes
1 answer
46 views

Problem using variables with feynmp fmffor

This is a follow-up to this question. The solution provided by egreg worked, but the same solution doesn't work when trying to update a variable within an fmffor loop. A complete example is shown ...
user1247's user avatar
  • 145
2 votes
1 answer
69 views

Problem using variables with feynmp

I've tried the def command or pgfmathsetmacro, and the feynman diagrams are drawn as though the variable is always set to "1" regardless. The only workaround I've found is to put my feynman diagram ...
user1247's user avatar
  • 145
1 vote
1 answer
340 views

Cut diagrams/sum over final states with feynmp

I am trying add a cut to the following handbag diagram \begin{fmffile}{test} \begin{fmfgraph*}(200,90) \fmfleft{i2,i1} \fmfright{o2,o1} \fmf{dbl_plain_arrow,label=$P$}{i2,v4} \fmf{plain}{v4,v5} \fmf{...
nsbd88's user avatar
  • 13
2 votes
1 answer
217 views

how do I put a dot in a \fmf line using feynmp?

I would like to add a dot to the top of the circle, but \fmfdot only works on vertices. Is there a way to do this? Here is the code that I am using: \documentclass{article} \usepackage{feynmp} \...
ScienceGuy's user avatar
3 votes
1 answer
202 views

Gluon curly upside down

I am drawing some feynman diagrams and for stylistic purposes I would like to have the gluon curly upside-down (the way the gluon attaches to the vertex is somehow ugly. Looking in online drawers ...
DaFraLo22's user avatar
5 votes
1 answer
649 views

An equivalent to \fmffreeze in TikZ-Feynman?

I am attempting to draw the following diagram using TikZ-Feynman (CTAN) But I am having difficulty keeping the fermion legs straight after attaching the photons. Using feynmp there is a workaround ...
Luke's user avatar
  • 163
0 votes
2 answers
510 views

Self-energy diagram using feynmp

Please, could you help me to draw such a diagram? The straightforward code I use is just this: \begin{fmffile}{diagr_6th_ord} \begin{fmfgraph}(200,125) \fmfleft{i} \fmfright{o} \fmf{photon}{i,v1} \...
user2891657's user avatar
1 vote
1 answer
481 views

How to use feynmf (feynmp)? [duplicate]

I would like to draw a tadpole diagram with a cross in a circle as the picture in the parenthesis but the double line is not necessary. I write the codes as below: \begin{fmffile}{tadpole} \begin{...
Wein Eld's user avatar
  • 141
2 votes
2 answers
1k views

Balance length of lines in Feynman diagram (feynmp)

How can one make the Feynman diagram more symmetric? I want the 'photon/Z propagator' to be much shorter, and if possible, some more space in the right most part of my diagram, where the 'charginos' ...
meghaaan's user avatar
2 votes
1 answer
240 views

In a Feynman diagram, how can the length of some lines be extended for the purpose of clarity?

I have a Feynman diagram like the following: The red lines on the right connecting the final states overlap with the black lines of the Feynman diagram. If the lowermost and uppermost black lines of ...
d3pd's user avatar
  • 1,718
1 vote
1 answer
463 views

On a Feynman diagram, how can lines (color strings) be drawn?

I have a Feynman diagram like this: I want to add to it some lines joining the final states, in a way a bit like this (drawn using TikZ): How could this be done (preferably using feynMP)? How could ...
d3pd's user avatar
  • 1,718
4 votes
1 answer
2k views

Repositing labels in Feynman diagram

I have the following code in Feynmf: \documentclass{article} \usepackage{feynmp} \usepackage{ifpdf} \ifpdf \DeclareGraphicsRule{*}{mps}{*}{} \fi \usepackage{empheq} \begin{document} \unitlength =...
Funzies's user avatar
  • 587
3 votes
1 answer
2k views

How can a label be positioned in feynmp?

I have a Feynman diagram like this: Let's say I want the label for the W+ to be on the opposite side of its squiggly line or the label for the lowermost tbar to be on the opposite side of its ...
d3pd's user avatar
  • 1,718