% chetdoc.tex (for chet version 2.3a)
% Copyright 2026 Andreas Stergiou
%
% This is an example file for the use of the package chet (version 2.3a).
%
% This work 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.
% The latest version of this license is in
%   https://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.

\documentclass[12pt]{article}

\usepackage{textcomp}
\usepackage{chet}

\definecolor{forestgreen}{rgb}{0.0, 0.27, 0.13}
\definecolor{darkblue}{rgb}{0.0, 0.0, 0.55}
\definecolor{darkred}{rgb}{0.55, 0.0, 0.0}
\hypersetup{colorlinks,
           breaklinks=true,
           linkcolor={forestgreen},
           citecolor={darkblue},
           urlcolor={darkred},
           pdftitle={The chet package},
           pdfdisplaydoctitle
}

\draftmode %Comment this for labels on the right margin to go away.

\preprint{UCSD-PTH-11-08}

\title{The chet package}

\author{Andreas Stergiou$^{\ast,}$\email{stergiou@physics.ucsd.edu} and Author2$^{\ast,\dagger,}$\email{address2@example.com}}

\affiliation{$^{\ast}$Department of Physics, University of California, San Diego, La Jolla, CA 92093 USA\\
$^{\dagger}$Department of Physics,University of Somewhere Else, \ldots}

\abstract{This is a sample produced using \texttt{chet}. This package is inspired by Paul Ginsparg's \texttt{harvmac}, but uses \LaTeXe\ instead of \TeX. The commands provided are to be used as alternatives to \LaTeXe's default environments (which can all still be used with \texttt{chet}).
\begin{center}
    %
    (\texttt{chet} can be found at \href{https://www.ctan.org/pkg/chet}{\texttt{https://www.ctan.org/pkg/chet}}.)
\end{center}
}

\date{June 2011}

\begin{document}

\maketitle

\toc

\newsec{Basic commands}[SecLabel]
%
\subsec{Preamble}
%
To use \verb1chet1 first make sure that the file \verb1chet.sty1 is in your path. (If you have references you also have to add the file \verb1chetref.bst1 to your path.) You can then start your document with \verb1\documentclass{article}1 and include \verb1\usepackage{chet}1 in the preamble. For labels of equations, sections, etc.\ to appear on the margins, you can use the command \verb1\draftmode1.

In the preamble of the document one also specifies the title, abstract, preprint number, authors' email addresses, (see usage in this example file). Note that if you have math in the title you should put it in \verb1\titlemath{}1, i.e.\ use \verb1$\titlemath{...}$1, in order to achieve the correct amount of boldness. The command \verb1\emailV{}1 is also available to be used when emails are to be displayed as vertically justified footnotes (one below the other) rather than in the same line. Additionally, if you want to have only one footnote with all email addresses and without footnote marks, then you can use the command \verb1\emails{}1 inside the \verb1\author{}1 environment.  If a specific date is desired, then just include \verb1\date{}1 with the desired date in the preamble of your document, and the default current date on the bottom left of the title page will be substituted with the one you specified.

It is suggested that authors compile straight to \texttt{pdf} with \texttt{pdflatex}, i.e.\ following \TeX\textrightarrow\verb1PDF1. The compilation method \TeX\textrightarrow\verb1DVI1\textrightarrow\verb1PS1\textrightarrow\verb1PDF1 is obsolete and redundant, and should not be used. As far as I know the only problem that arises frequently with \TeX\textrightarrow\verb1PDF1 is the inability to obtain \verb1psfrag1 replacements in \verb1eps1 figures; that can be taken care of very easily with the package \verb1pstool1. Of course, these days one should only make figures with \href{https://sourceforge.net/projects/pgf/}{\emph{TikZ}}.

\subsec{Sections}
%
Sections start with the command \verb1\newsec{}[]1. The first argument is the name of the section, while the second provides the label. You can refer back to sections simply by putting a slash in front of their label. For example, if you write \verb1\newsec{Name}[Label]1 you can just type \verb1\Label1 in the subsequent text and the number of the section will appear, e.g.\ you can refer  to section \SecLabel. Note that if you are referring to a label you define in a later line, for example you want to refer to a later section, then the default \verb1\ref{Label}1 is needed.\foot{The same holds for all references to equations defined with the commands outlined in this section.} Note, also, that the second argument of the command can be omitted altogether, i.e.\ the command \verb1\newsec{}1 starts a section but does not give it a label. The commands \verb1\subsec{}[]1 and \verb1\subsubsec{}[]1 that define subsections and subsubsections respectively, are similarly defined.

\subsec{Equations}
%
For equations use the command \verb1\eqn{}[]1. Again, inside \verb1{}1 you write the equation and inside \verb1[]1 the label, if you want one. An equation number will appear only if you do type \verb1[Label]1.\foot{If you leave the \texttt{[]} empty, the equation is going to get a number but not a label. If you don't type the \texttt{[]} at all, then the equation will have no number.} For example, If you give the label \verb1EqMagic1 to an equation, \eqn{e^{i\pi}+1=0,}[EqMagic] then you can just type \verb1\EqMagic1 to reference it, \EqMagic. For aligned equations with one number in the vertical middle use the command \verb1\eqna{}[]1. A single \verb1&1 indicates the alignment point, while \verb1\\1 indicates a line break. For example, \eqna{\cos^2 \theta+\sin^2 \theta &=1, \\ \cos^2 \theta-\sin^2 \theta&=\cos 2\theta.}[EqTrig] You can later refer to equation \EqTrig with \verb1\EqTrig1.

Commands that simplify the writing of subequations are also supplied for two, three, and four subequations. They are, respectively, \verb1\twoseqn{}[]{}[][]1, \verb1\threeseqn{}[]{}[]1 \verb1{}[][]1, and \verb1\fourseqn{}[]{}[]{}[]{}[][]1.  Each pair of \verb1{}[]1 receives an equation and a label,\foot{If you don't want to label a subequation leave the corresponding \texttt{[]} empty.} while the last \verb1[]1 is used for an overall label and can be omitted. Each of the equations has an \verb1&1 at the alignment point. For example, equation \EqTrig could be written as \twoseqn{\cos^2 \theta+\sin^2 \theta&=1,}[FTrig]{\cos^2 \theta-\sin^2 \theta&=\cos 2\theta.}[STrig][TrigAll] You can then refer to \FTrig, \STrig, or \TrigAll. More complicated structures with subequations can be achieved with the corresponding \texttt{amsmath} environment. Note that all equation environments define labels that can be used only later in the text with \verb1\Label1. The original \verb1\eqref{Label}1 is otherwise needed. In the rare occasion that the name of your label coincides with the name of a \LaTeXe\ command, you will get an error and the file won't compile. In that case, just change the name of your label.

\subsec{Citations}
%
To cite a paper use the command \verb1\rcite{}1. (The default command \verb1\cite{}1 can still be used.) The syntax is exactly the same as in \verb1\cite1, but, if \verb1\draftmode1 is used, \verb1\rcite1 presents the label of the citation as an exponent to the citation number wherever that appears (except in the bibliography, where the label appears on the left margin).

The \verb1.bib1 file can be included in the main \verb1.tex1 file, preferably at the end, right before the \verb1\end{document}1. The way to do this is with the environment
%
\begin{verbatim}
\begin{filecontents}{bibname.bib}
    Your citations go here...
\end{filecontents}
\end{verbatim}
%
Here, \verb1bibname.bib1 should be substituted with the name of the \verb1.bib1 file that you call in the command \verb1\bibliography{}1.\foot{The functions supported from the \texttt{.bst} style file are \texttt{@article}, \texttt{@book}, \texttt{@inbook}, and \texttt{@inproceedings}.} (See usage in this example file.) Note that you still have to run Bib\TeX\ to compile the bibliography.

For example, limit cycles appear in the RG in $4-\varepsilon$ dimensions as demonstrated in \rcite{FGS}.

%%fakesection Acknowledgments
\ack{I would like to thank Ken Intriligator, Ben Grinstein, and Jean-Fran\c{c}ois Fortin for adopting \texttt{chet}, and for their numerous suggestions and tips that helped me improve the package.

Several \LaTeX\ packages are called by \texttt{chet}. In alphabetical order, they are \texttt{amsmath}, \texttt{caption}, \texttt{cite}, \texttt{collref}, \texttt{datetime}, \texttt{filecontents}, \texttt{footmisc}, \texttt{geometry}, \texttt{hyperref}, \texttt{kv}\-\texttt{options}, \texttt{manyfoot}, \texttt{mciteplus}, \texttt{microtype}, \texttt{showkeys}, \texttt{tocloft}, \texttt{xparse}, and \texttt{xspace}. I would like to thank the authors of these great packages for their amazing work!}

\appendix

\newsec{Other commands}
%
Commands often used include
%
\begin{itemize}
    \item  \verb1\toc1: produces the table of contents.
    \item \verb1\foot{}1: produces footnotes.
    \item \verb1\ack{}1: used for acknowledgments. Use \verb1\usepackage[british]{chet}1 if you want the header to be printed in the British variant.
    \item \verb1\begin{appendices}...\end{appendices}1: used for appendices. \verb1\appendix1 still works.
    \item \verb1\bibliography{}1: produces the bibliography. If you want to be able to group bibliography items under one number, then use \verb1\usepackage[mcite]{chet}1. This incorporates the functionality of \href{https://ctan.org/pkg/mciteplus}{\texttt{mciteplus}}.
\end{itemize}

\newsec{Conference proceedings}
%
If you want to use the macros for equations and sections defined in \texttt{chet}, but have to use another \texttt{.sty} file, for example for conference proceedings, then you can just use the option \texttt{macrosonly} when you call \texttt{chet}, i.e.\ instead of \verb1\usepackage{chet}1, include \verb1\usepackage[macrosonly]{chet}1 in the preamble of your \texttt{.tex} file.

\bibliography{chetdocbib}
\begin{filecontents}[overwrite]{chetdocbib.bib}
@article{FGS,
    author = "Fortin, Jean-Francois and Grinstein, Benjamin and Stergiou, Andreas",
    title = "{Scale without Conformal Invariance: An Example}",
    eprint = "1106.2540",
    archivePrefix = "arXiv",
    primaryClass = "hep-th",
    reportNumber = "UCSD-PTH-11-11",
    doi = "10.1016/j.physletb.2011.08.060",
    journal = "Phys. Lett. B",
    volume = "704",
    pages = "74--80",
    year = "2011"
}

\end{filecontents}

\end{document}
