Feynman Propagator (Counterterm)


Edit and compile if you like:


    cross/.style={path picture={\draw[black]
        (path picture bounding box.south east) -- (path picture bounding box.north west)
        (path picture bounding box.south west) -- (path picture bounding box.north east);}}

  \draw (-2.25,0) node[left] {$\varphi_a$} -- (2.25,0) node[right] {$\varphi_b$};
  \draw[->,yshift=5pt] (-2,0) -- (-1,0) node[midway,above] {$p_1$};
  \draw[->,yshift=5pt] (1,0) -- (2,0) node[midway,above] {$p_2$};
  \draw[fill=white,cross] (0,0) circle (0.2) node[above=5pt] {$\partial_t R_{k,ab}(p_1,p_2)$};

Click to download: feynman-2.tex
Open in Overleaf: feynman-2.tex
This file is available on tikz.netlify.app and on GitHub and is MIT licensed.
See more on the author page of Janosh Riebesell..

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