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\pdf_title "Feynman Diagrams"
\pdf_author "LyX Team, Uwe Stöhr, Ronen Abravanel"
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\begin_layout Title

\noun on
Feynman
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-Diagramme
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status open

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Autoren:
 Uwe Stöhr und Ronen Abravanel
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Um 
\noun on
Feynman
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-Diagramme erstellen zu können,
 muss das \SpecialChar LaTeX
-Paket 
\series bold
feyn
\series default
 installiert sein.
 Ein 
\noun on
Feynman
\noun default
-Diagramm wird erzeugt,
 indem der Befehl 
\series bold

\backslash
Diagram
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 in eine Formel eingegeben wird.
 Man kann anschließend neue Matrix-Spalten und Zeilen wie bei normalen Matrizen einfügen.
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Als Matrix-Eintrag kann man Befehle eingeben,
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Partikel
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\begin_inset Quotes gld
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Propagatoren
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 fungieren zum Beispiel:
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f,g,h
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Fermion,
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g
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h
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Fermion/Photon,
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fd
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gu
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fv
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A und V sind Modifikatoren um einen Pfeil nach links/oben oder rechts/unten zu zeichnen
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Fermion/Photon-Schleife
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Teilchenimpuls-Angabe
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\noindent
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das Vertex-Label 
\emph on
p
\emph default
 ist entweder '^' oder '_' um über oder unter dem Vertex zu beschriften
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\begin_layout Standard
Dies sind nur einige der Features des Pakets 
\series bold
feyn
\series default
,
 dessen Handbuch in 
\begin_inset CommandInset citation
LatexCommand cite
key "Feyn"
literal "true"

\end_inset

 zu finden ist.
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\begin_layout Standard
\begin_inset Note Greyedout
status open

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\series bold
Achtung:

\series default
 Wenn Ihr Dokument ein Stichwortverzeichnis hat und eine der AMS Theorem-Module verwendet wird,
 muss die Option 
\series bold
noglobalbang
\series default
 zu den Dokumentklassenoptionen in den Dokument-Einstellungen hinzugefügt werden.
 Dies ermöglicht die Verwendung des Zeichens '!' in Stichworten (wird für Untereinträge benötigt),
 kann aber zu Problemen mit den Align-Umgebungen führen (die im Abschnitt 
\begin_inset Quotes gld
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Align-Umgebungen
\begin_inset Quotes grd
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 in \SpecialChar LyX
s Mathe-Handbuch beschrieben sind).
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literal "true"

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target "https://mirrors.ctan.org/fonts/feyn/feyn.pdf"
literal "false"

\end_inset

 des \SpecialChar LaTeX
-Pakets 
\series bold
feyn
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\end_body
\end_document
