[Tex/LaTex] What’s the most elegant way to obtain Dirac operators? (slash notation)

math-mode

What's the best way to achieve the Dirac slash notation for Dirac operators (contraction with Gamma matrices)? I would have thought the AMSmath packages would have this built in somewhere.

(The cancel package springs to mind, but surely there is an easier method?)

Best Answer

Does

\documentclass[12pt]{article}
\usepackage{amsmath}
\usepackage{slashed}
\begin{document}
$\slashed{p}$
\end{document}

give what you want?

enter image description here

Related Solutions

[Tex/LaTex] What’s the best way make an “augmented” coefficient matrix

One way to do this is implemented in the (free, in both senses!) online linear algebra textbook Linear Algebra by Jim Hefferon. It's written in LaTeX and is open-source so one can download the book and its attendant style files. One of them, called linalgjh.sty is about typesetting common linear algebra stuff such as augmented matrices and row reductions and the like. The code for the augmented matrices is:

\newenvironment{amatrix}[1]{%
  \left(\begin{array}{@{}*{#1}{c}|c@{}}
}{%
  \end{array}\right)
}

and is used as:

\begin{amatrix}{2}
   1 & 2 & 3 \\  a & b & c
 \end{amatrix}

(note that the argument is one less than the total number of columns). I guess that the @{}s at the start and end are to get the spacing right with the parentheses (mentioned by TH in a comment to fabikw's similar answer).

That style file has several other useful linear algebra macros that may be useful.

[Tex/LaTex] Smaller matrices (or other math elements) in displayed math

\documentclass{article}
\usepackage{amsmath}
\begin{document}

\begin{gather*}
 \mbox{\scriptsize%
    $A = \begin{bmatrix} a & b & c \\ d & e & f \\ g & h & i \end{bmatrix}$}\\
    A = \begin{bmatrix} a & b & c \\ d & e & f \\ g & h & i \end{bmatrix}
\end{gather*}

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] What’s the best way make an “augmented” coefficient matrix

[Tex/LaTex] Smaller matrices (or other math elements) in displayed math

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