我的 Wick 收缩显示不正确:左侧的收缩正常,但右侧的收缩高度非常低
\documentclass[amsmath,amssymb,12pt,eqsecnum]{revtex4}
\usepackage[a4paper]{geometry}
\linespread{1}
\usepackage[breaklinks, colorlinks, citecolor=blue]{hyperref}
\usepackage{slashed}
\usepackage{gensymb}
\usepackage{simplewick}
\usepackage{feynmp-auto}
\usepackage[pdftex]{graphicx}
\begin{document}
\begin{eqnarray}
\contraction{}{\psi}{|p}{,} \psi |p,s \rangle = u^s (p) &\quad& \langle
p \contraction{}{,}{s|}{\bar{\psi}} ,s|\bar{\psi}
= \bar{u}^s (p) \\ \nonumber
\contraction{}{\bar{\psi}}{|k}{,} \bar{\psi}|k,s \rangle = \bar{v}^s (k)
&\quad& \langle k \contraction{}{,}{s|}{\psi} ,s| \psi
= v^s (k) \nonumber
\end{eqnarray}
\end{document}
答案1
simplewick
使用第二个参数中的字符高度将收缩符号提升到适当的高度。不幸的是,,
它有点太小了,所以您必须添加\vphantom{...}
以将符号提升到更合理的高度。
\documentclass{article}
\usepackage{simplewick}
\begin{document}
\begin{eqnarray}
\contraction{}{\psi}{|p}{,} \psi |p,s \rangle = u^s (p) &\quad& \langle
p \contraction{}{\vphantom{\bar\psi},}{s|}{\bar{\psi}} ,s|\bar{\psi}
= \bar{u}^s (p) \\ \nonumber
\contraction{}{\bar{\psi}}{|k}{,} \bar{\psi}|k,s \rangle = \bar{v}^s (k)
&\quad& \langle k \contraction{}{\vphantom{\psi},}{s|}{\psi} ,s| \psi
= v^s (k) \nonumber
\end{eqnarray}
\end{document}