In every quantum field theory course, there will be a chapter that Wicks theorem and how it can be used to convert a very large product of many creation and annihilation operators into something more tractable and normal ordered.

The contraction are denoted with a square bracket over the operators which are being contracted which is rather annoying to typeset in LaTeX as the only other package available was simplewick which is rather unwieldy. As a result, I created a package which provides a simpler syntax for Wick contractions. For example, contracting the two \(A\) and \(\phi\) together is achieved with just:

  \wick{\c1 A \c2 \phi \c2 \phi \c1 A}

All the documentation can be found in simpler-wick.pdf.