1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
%%
%% The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%% Example 8-4-14 on page 564.
%%
%% Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%
\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{348.0pt}
\AtEndDocument{\end{fmffile}}
\AtBeginDocument{\begin{fmffile}{ftmp}}
\StartShownPreambleCommands
\usepackage{array,multicol,feynmp}
\StopShownPreambleCommands
\begin{document}
\setlength{\columnseprule}{0pt}
\begin{multicols}{3}
\begin{center}
\begin{fmfgraph*}(30,30)
\fmfleft{e1,e2} \fmfright{e4,e3}
\fmf{plain}{v4,v1,v2,v3}
\fmf{plain,label=$t_{ij}=4$,label.side=left,tension=4}{v3,v4}
\begin{fmffor}{n}{1}{1}{4}
\fmf{plain}{v[n],e[n]}
\fmfv{dec.sh=circle,dec.si=thick}{v[n]}
\end{fmffor}
\end{fmfgraph*}\\
\begin{fmfgraph*}(30,30)
\fmfleft{e1,e2} \fmfright{e4,e3}
\fmf{plain}{v4,v1,v2,v3}
\fmf{plain,label=$t_{ij}=1$,label.side=left}{v3,v4}
\begin{fmffor}{n}{1}{1}{4}
\fmf{plain}{v[n],e[n]}
\fmfv{dec.sh=circle,dec.si=thick}{v[n]}
\end{fmffor}
\end{fmfgraph*}\\
\begin{fmfgraph*}(30,30)
\fmfleft{e1,e2} \fmfright{e4,e3}
\fmf{plain}{v4,v1,v2,v3}
\fmf{plain,label=$t_{ij}=1/4$,label.side=left,tension=1/4}{v3,v4}
\begin{fmffor}{n}{1}{1}{4}
\fmf{plain}{v[n],e[n]}
\fmfv{dec.sh=circle,dec.si=thick}{v[n]}
\end{fmffor}
\end{fmfgraph*}
\end{center}
\end{multicols}
\end{document}
|